Answer:
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If x = -3, y = 5 and z = -2, evaluate the following:
help plsssss
note giving brilst
Answer:
3) x^2-yz/z^2
x = -3, y = 5 and z = -2 plug in these values
-3^2 -5(-2) /-2^2
= -1/4
decimal form: -0.25
4) x^2+y^2+z^2/xyz
x = -3, y = 5 and z = -2 plug in these values
-3^2+5^2+-2^2/-3*5*-2
= 2/5
decimal form: 0.4
5) x+y/z + y+z/x
x = -3, y = 5 and z = -2 plug in these values
(-3+5/-2)+(5+(-2)/-3)
= -2
6) 2x+y-z/x-3y+z
x = -3, y = 5 and z = -2 plug in these values
2(-3)+5-(-2)/-3-3(5)+(-2)
= -1/20
decimal form: -0.05
Answer:
(iii) (-3)^2 - (5)(-2)/(-2)^2
9 - (-10)/ 4
9+10/4
19/4
4.75
(iv) (-3)^2 + (5)^2 + (-2)^2/(-3)(5)(-2)
9 + 25 +4 / 30
9 + 29 / 30
38 / 3
1.26
(v) (-3) + (5)/(-2) + (5) + (-2)/(-3)
-8 / -2 + -10 / -3
4 + -10/ -3
LCM = -3
-12 + (-10)/ -3
-22/-3
7.3
(vi) 2(-3) + (5) - (-2)/(-3) - 3(5) + (-2)
-6 + 5/-3 -15 -2
-1 / -3 -17
-1 / -20
1/20
Y= -6/5x-7 and y=2/5x+1
Answer:
x = -5
y = -1
Step-by-step explanation:
Y= -6/5x-7 and y=2/5x+1
then:
-6/5x - 7 = 2/5x + 1
simplify:
-8/5x = 8
divide both sides by 8:
-1/5x = 1
multiply both sides by 5:
-x = 5
x = -5
y = 2/5(-5) + 1 = -2 + 1 = -1
can somebody please help me
Answer:
Step-by-step explanation:
10
Steps to putting 12y^2-4xy+9x^2=18x-124 in standard form
Does this graph show a function? Explain how you know.
Answer:
C
Step-by-step explanation:
It passes the vertical line test
the vertical line test is taking a vertical line and putting it anywhere on the graph, and if it passes 2 points, it fails, and since if you put the line anywhere, it only passes one point of the parabala, so it passes the line test
Answer: C
Step-by-step explanation: The easiest way to determine if a
relation is a function is to use the vertical line test.
The vertical line test tells us that if we can draw a vertical line
that intersects more than one point on the graph of a relation,
then the relation is not a function.
However, in this case, notice that there is no way to draw a
vertical line that intersects more than one point on the graph.
Therefore, this relation must be a function.
Linda made 2 identical necklaces, each having beads and a pendant. The total cost of the beads and pendants for both necklaces was $8.40. If the beads cost a total of $4.20, how much did each pendant cost?
Answer:
$2.10
Step-by-step explanation:
8.40-4.20=4.20÷2=2.10
Answer:
2.1
Step-by-step explanation:
(8.4-4.2)/2
=4.2/2
=2.1
Daniela fue a la florería a comprar rosas rojas para regalar a su madre el día de su cumpleaños. Si una rosa cuesta $2.550 ¿Cuánto cuesta 2 docenas?
Answer:
2 docenas cuestan $61.200.
Step-by-step explanation:
Para encontrar la respuesta, debes considerar que una docena equivale a 12 artículos, por lo cual tienes que multiplicar 12 por 2 para encontrar el número de rosas en 2 docenas:
12*2=24
Ahora, dado que sabes que una rosa cuesta $2.550 tienes que multiplicar este valor por 24 para encontrar cuanto cuestan 2 docenas:
$2.550*24=$61.200
De acuerdo a esto, la respuesta es que 2 docenas cuestan $61.200.
12. A school pays a company $125 to design
gym T-shirts. It costs an additional $15 to
make each T-shirt
a) Copy and complete the table of values.
Number of T-Shirts Cost ($)
0
125
5
200
10
15
35
950
b) Develop an equation to determine the
cost of the T-shirts. Explain the meaning
of the numerical coefficient.
c) What would it cost to make 378 T-shirts?
d) If the school store has a budget of $2345
for T-shirts, how many T-shirts can be
ordered?
cost of T- shirts = 125 (Fixed price) + 15* number of T- shirts
Cost to make 378 T-shirts is $5795.T-shirts can be ordered in $2345 is 148 T- shirtswhat is equation?In algebra, an equation can be defined as a mathematical statement consisting of an equal symbol between two algebraic expressions that have the same value.
A school pays a company $125 to design gym T-shirts.
It costs an additional $15 to make each T-shirt.
Number of T-Shirts Cost ($)
0 125
5 200
10 275
15 350
b) equation:
cost of T- shirts = 125 (Fixed price) + 15* number of T- shirts
c) cost of 378 T- shirts
=125+ 15(378)
= 5795
c) school store has a budget of $2345
Number of T- shirts = (2345-125)/15
= 148 T- shirts
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The final price of an iPhone 12 Pro Max was $1072.85 after a 7.5% sales tax was applied. What was the original cost of the phone? Please explain
Answer:
992.39
Step-by-step explanation:
sales tax was 80.46 subtract from 1072.85 get 992.39 original price.
Parallelogram CDEF with vertices C(-4,-4), D(-2, 0), E(6, 1), and F(4, -3) in the line y = 2.
The coordinates after the reflection will be C' = (-4, 8), D' = (-2,4), E' = (6,3), and F' = (4, 7).
What is geometric transformation?
It is defined as the change in coordinates and the shape of the geometrical body. It is also referred to as a two-dimensional transformation. In the geometric transformation, changes in the geometry can be possible by rotation, translation, reflection, and glide translation.
It is given that, Parallelogram CDEF with vertices C(-4,-4), D(-2, 0), E(6, 1), and F(4, -3) in the line y = 2.
The following coordinates are obtained after reflection in the line y = 2.
C' = (-4, 8)
D' = (-2,4)
E' = (6,3)
F' = (4, 7)
Thus, the coordinates after the reflection will be C' = (-4, 8), D' = (-2,4), E' = (6,3), and F' = (4, 7).
The question is incomplete.
The complete question is in the picture, please refer to the attached picture.
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Thinking Critically Problem Solving One
jelly-filled donut contains an amount of energy
equal to about 0.5 kilowatt-hours. If that energy
could be converted into electrical energy, how
long would it keep a 15-watt night light lit?
A 15 watt night light would keep up to lit for 33.33 hours.
What is Energy?Energy in simple definition can be defined as the ability to do work. Energy can be converted into various forms and can be used to do the work.
The formula for calculating energy is,
Energy = Power × Time
Given that energy of one jelly filled donut contains an amount of energy equal to 0.5 kilowatt hours.
1 kilowatt = 1000 watts
0.5 kilowatt hour = 500 watts hour
Now this energy is converted into electrical energy and used it to lit 15 watt night light.
Power of the light = 15 watts
Energy = 500 watts hour
Time = Energy / Power
= 500 / 15
= 33.33
Hence 15 watt light will lit for 33.33 hours.
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please answer correctly !!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!
Answer:
ok pls mark me brainliest look below for the answer
Step-by-step explanation:
22
The area of the total surface of a square based pyramid is
576 cm² and slant height is 10 cm, find the volume of the
pyramid
Answer: V = 366917713920 cm³
Help please! I don’t know the answer to this question
Answer:
x=8
[tex]2x \times 10 \div 2\\ = 2(8) \times 10 \div 2\\ = 16 \times 10 \div 2 \\ = 160 \div 2 \\ = 80[/tex]
Answer:
x = 8 cm
Step-by-step explanation:
Area = 1/2bh
80 = 1/2(10)(2x)
10x = 80
x = 8
Please help !!
Find the limit of the function by using direct substitution.
limit as x approaches three of quantity x squared plus eight x minus two.
0
-31
Does not exist
31
Given:
The limit problem is:
[tex]\lim_{x\to 3}(x^2+8x-2)[/tex]
To find:
The limit of the function by using direct substitution.
Solution:
We have,
[tex]\lim_{x\to 3}(x^2+8x-2)[/tex]
Applying limit, we get
[tex]\lim_{x\to 3}(x^2+8x-2)=(3)^2+8(3)-2[/tex]
[tex]\lim_{x\to 3}(x^2+8x-2)=9+24-2[/tex]
[tex]\lim_{x\to 3}(x^2+8x-2)=33-2[/tex]
[tex]\lim_{x\to 3}(x^2+8x-2)=31[/tex]
Therefore, the correct option is D.
Find the slope of the line between the points: (-2,3) and (3,6)
Answer:
3/5
Step-by-step explanation:
m = y2-y1 / x2 - x1
6-3 / 3 - -2 = 3/5
Answer:
m= [tex]\frac{3}{5}[/tex]
hope this helps!
Step-by-step explanation:
which of the following equations is equivalent to log(y) = 4.876
Answer:
[tex]10^{4.876}=y[/tex]
Step-by-step explanation:
Logarithms are just another way of arranging an exponential equation! You know how you can rearrange the equation 2 + 3 = 5 as 5 - 3 = 2, or the equation 2 x 3 = 6 as 6 ÷ 3 = 2? With logarithms, you can do the same thing with an equation like 2³ = 8. As a logarithm, we would write this equation as log₂(8) = 3. Here, we call 2 the base, 8 the argument, and 3 the exponent.
Logarithms like the one in the problem with a base of 10 are just written as log, without the base written out. In the equation log(y) = 4.876, our base is 10, our argument is y, and our exponent is 4.876, so as an exponential equation, we would write it as
[tex]10^{4.876}=y[/tex]
Can someone help me please.in school.
can you send a closer pic?
Solve for x in the diagram below.
Answer:
x = 20°
Step-by-step explanation:
here's your solution
=> it is given that whole angle is 90°
=> so, x + (3x + 10) = 90°
=> x + 3x + 10 = 90°
=> 4x + 10 = 90°
=>4x = 90 - 10
=> 4x = 80°
=.
=> x = 80/4
=> x = 20°
one angle is 20° and other 70°
hope it helps
Answer:
20 is your answer
x+3x+10=90 being right angle
4x=90-10
x=80/4=20
HELP ME AND PLEASE SHOW WORK
Answer:
Its scaled half the bigger model and evidence is to divide your numbers by 2 or multiply by .5
Step-by-step explanation:
When solving for x in a one-variable equation, there can be one solution, no solution, or infinitely many solutions. In complete sentences, explain whether this statement is true or false, and why.
The recipe for oatmeal cookies requires cup of sugar. If Cindy wants to make the amount of cookies given in the recipe, how much sugar is needed?
The line of best fit for a scatter plot is shown:
A scatter plot and line of best fit are shown. Data points are located at 0 and 1, 2 and 1, 2 and 3, 4 and 3, 4 and 5, 6 and 3, 7 and 5, 9 and 4. A line of best fit passes through the y-axis at 1 and through the point 4 and 3.
What is the equation of this line of best fit in slope-intercept form? (4 points)
a. y = 1x + one half
b. y = one half x + 1
c. y = 1x − one half
d. y = negative one halfx + 1
What are the features of the function f(x) = -log 3 +6 graphed below?
HELP DUE IN 10 MINS!
The monument is Blank feet tall.
Answer:
i got 555 ft. hope this help you.
Determine the solution set for (x-3)2-18=-4
A university will add fruit juice vending machines to its classroom buildings if the student body president is convinced that more than 20 percent of the students will use them. A random sample of n students will be selected and asked whether or not they would use the vending machines. A large-sample test for proportions at the significance level of a = 0.05 will be performed. The null hypothesis that the proportion of all students who would use the vending machines is 20 percent will be tested against the alternative that more than 20 percent of all students would use them. For which of the following situations would the power of the test be highest?
A .The sample size is n = 750, and 20 percent of all students actually use the vending machines.
B. The sample size is n = 750, and 50 percent of all students actually use the vending machines.
C. The sample size is n = 1,000, and 55 percent of all students actually use the vending machines.
D. The sample size is n = 1,000, and 25 percent of all students actually use the vending machines.
E. The sample size is n = 500, and 50 percent of all students actually use the vending machines.
Answer:
The power of the test will be highest for;
C. The sample size is n = 1,000, and 55 percent of all students actually use vending machines
Step-by-step explanation:
For a large sample test for proportions, we have;
[tex]z=\dfrac{\hat{p}-p}{\sqrt{\dfrac{p \cdot q}{n}}}[/tex]
Where;
[tex]\hat p[/tex] = The percentage of the hypothesized proportion = 20% = 0.20
p = The actual proportion
n = The size of the sample
The power of the test increases when;
The sample size 'n' is large
When the true vale of the measured items in the test is much larger than the value set as the null hypothesis
When the significant level is high
Therefore, we have;
The power of the test will be highest when the sample size is n = 1,000, and 55 percent of all students actually use vending machines
HELP I NEED HELP ASAP
HELP I NEED HELP ASAP
HELP I NEED HELP ASAP
HELP I NEED HELP ASAP
HELP I NEED HELP ASAP
How many solutions can a system of linear equations have?
Answer: One
Step-by-step explanation:
G (x ), represents transformations on the parent function of y = (½) x Write the equation for g (x ).
Complete Question:
g(x), represents transformations on the parent function of [tex]y = (\frac{1}{2})^x[/tex].
Write the equation for g (x ) with the following transformations:
Reflect over y-axis, and shift right 7
Answer:
[tex]g(x) = (\frac{1}{2})^{-x-7}[/tex]
Step-by-step explanation:
Given
[tex]y = (\frac{1}{2})^x[/tex]
Represent the function as:
[tex]f(x) = (\frac{1}{2})^x[/tex]
Taking the transformations, one after the other:
Reflect over the y-axis.
This is represented by the rule: (x,y) ==> (-x,y)
So, we have:
[tex]f'(x) = (\frac{1}{2})^{-x}[/tex]
Shift right 7 units
This is represented by (x,y) = (x - b, y)
Where b represents the number of units
So, we have:
[tex]f'(x-7) = (\frac{1}{2})^{-x-7}[/tex]
Hence:
[tex]g(x) = (\frac{1}{2})^{-x-7}[/tex]
Matilda is practicing her marching band routine on the football field. She starts at the center of the field, marches 80 feet south then 60 feet
west, and stops.
What is the direct distance from the center of the field to where Matilda stopped marching?
Answer:
100 feet
Step-by-step explanation:
pythagorean theorm
60^2+80^2= 10,000
Square root of 10,000= 100
Answer: 100
Step-by-step explanation:
