Answer:
part A) rearrange the equations to form simultaneous equations:
y-7x=8
y-5x=-2
now eliminate the y values by minusing the two equations:
(y-7x=8)-(y-5x=-2)
to get:
-2x=-6
x=3
now substitute x into one of the equations to get y:
y=5x-2
y=15-2
y=13
[tex]x = 3 \\ y = 13[/tex]
part B) the lines will intercept at (3, 13)
Step-by-step explanation:
hope this helps!
please help
Will mark brainlist
Ahh help, I need this question due in 10 mins-
I am thinking of a number. If you add 3 to the number and then multiply the sum by four, you end up with 48. What is my number?
Answer:
9
Step-by-step explanation:
48 / 4 = 12
12 - 3 = 9
Check Work
9 + 3 = 12
12 * 4 = 48
Determine the center and radius of the circle described by the equation. (x+1)2+(y−3)2=25
Answer: 2 (x + y) = 29
2 (x + y - 2) = 25
y = 29/2 - x
Expanded forms:
2 x + 2 y - 4 = 25
2 x + 2 y - 29 = 0
Real solution:
y = 29/2 - x
Solution:
y = 29/2 - x
Solution for the variable y:
y = 1/2 (29 - 2 x)
Step-by-step explanation:
hope its helpss
Of 570 people, 365 were male and 368 had brown hair. Of those with brown hair, 108 were female. What is the probability that a person was male or had brown hair? Write your answer as a reduced fraction.
Answer:
473/570
Step-by-step explanation:
No. of male = 365
No. of female = 570-365 = 205
No. of male with brown hair = 260
No. of female with brown hair = 108
the probability that a person was male or had brown hair = 365/570+108/570 = 473/570 [ for or case we add probabilities]
Answer:
Around 83% 473/ 570
Step-by-step explanation:
365 males + 108 females with brown hair = 473
Divide the number of outcomes desired by the total number of outcomes 473/570 = 0.829824....... = 82.98.....%
HELPP ME PLEASE!!!
(don’t answer just for points or i will report)
Answer:
callens expression makes sense because they are showing that the five is negative and it is also being multiplied to the set of parenthesis.
demetrius's expression is a simplified version of callens. Using the parenthesis around the -5 shows that not only is that number negative, but it will also be multiplied to the -4 in the parenthesis.
Step-by-step explanation:
i hope this helps :)
Add up 2/5,3/10 and 1/2 . Give your answer as a mixed number
Answer:
1 1/5
Step-by-step explanation:
To add fractions there are Three Simple Steps: Step 1: Make sure the bottom numbers (the denominators) are the same, Step 2: Add the numerators, put that answer over the denominator, Step 3: Simplify the fraction (if needed)
Mark me brainliest please!
jess travels 5 miles to school and pam travels 10 km. Who travels further? plz help i got 2 minutes ti answer
Answer:
pam
Step-by-step explanation:
10k is over 6 miles
PLS HELPPPP!!!!!! I GIVE BRAINLEST
Answer:
[tex]12 \times 4 = 48 \\ 8 \times 6 = 48[/tex]
=> These 2 multiplication facts are equal to 48.
PLZ HELP!!!!!!! AND NO LINKS
Answer:
A
Step-by-step explanation:
Acids turn litmus paper red. The characters of acids are given by substance A. An acid tastes sour and also conducts electricity well because of ionization properties. Additionally, Hydrogen gas is produced from acid-base neutralizations because most if not all acids contain hydrogen.
The following list shows how many brothers and sisters some students have: 3, 4, 3, 5, 6, 2, 5, 4, 5, 4, 6, 5, 3 State the mode.
Hep yep help helphelp
Answer:
pretty sure it's A
Step-by-step explanation:
cuz a common factor of 9 and 10 is 90 do the calculations and it should be simple.
Factor out the Greatest Common Factor (GCF): 36y - 16 ?
Answer: 4(9y-4)
Step-by-step explanation:
36y - 16
4 x 9 is 36
4(9 is just like 36y.
find the volume of the cylinder!
Use 3.14 for pi-
round your answer to the tenths place !!
Will mark b if correct:)
Answer: this is the answer i got before rounding it 2123.72 but your answer is 2123.7 hope it helps
Step-by-step explanation:
What is the value of g^-1(1)
According to the graph, g (-4) = 1, so g ⁻¹(1) = -4.
Step-by-step explanation:
According to the graph, g (-4) = 1, so g ⁻¹(1) = -4.
Hope this helps!
Thandi received 15% discount on a dress that costs R1500. How much did she
pay?
Answer:
She paid $1,275.00.
Step-by-step explanation:
I'm assuming you meant $1,500, so I'll be using that.
You can figure this out by subtracting 15% of 1,500 from 1,500.
15% of 1,500 is 225.
1500-225=1275
Therefore, 15% off of $1,500 is $1,275.
rational number and irrational number
Answer:
Rational numbers are the numbers that can be expressed in the form of a ratio (P/Q & Q≠0).
Irrational numbers cannot be expressed as a fraction. But both the numbers are real numbers and can be represented in a number line.
Step-by-step explanation:
explain how your know that 88is a solution to the equation 1/8 R = 11 complete the sentences
The word solution means to
88 is a solution to 1/8 R = 11 because
Answer:
In this equation R would equal 88 because it satisfies the equation.
Step-by-step explanation:
You must solve for R by isolating the variable(which is R). To move the 1/8, multiply both sides by 8. You would do this because 8 is the reciprocal of 1/8. With R on it's own, to keep both sides equal multiply 11*8. That equals 88, which satisfies the equation, which is why 88 is the solution.
Hope this helps :)
Suppose you want to treat your office team to lattes at a local coffee shop. The drinks are $4.25 each,
plus you plan to buy a $3 scone for yourself. You also tip the barista 10% and have to pay 8.25% sales tax.
How many lattes can you afford if you have $60 to spend?
Answer: 10 lattes
lmk if this is incorrect
Step-by-step explanation:
sales tax: 60(.0825)=4.95
tip: 60(.10)=6
scone: 3
total excluding lattes: 4.95+6+3=13.95
total left to spend on lattes: 60-13.95=46.05
amount of lattes you can afford: 46.05/4.25=10.835294.....
Answer:
11 lattes and 1 scone
Step-by-step explanation:
11×4.25= 46.75+3.00= 49.75
49.75×8.25%= $53.85
10% of $53.85 is $5.38
53.85+5.38= $59.23
You will have .77 left
Tamu ran 30 minutes and burned 170 calories. PART A: Which equations can be used to find the average number of calories, c, burned per minute?
Answer:
170 divided by 30 or calories divided by minutes
Step-by-step explanation:
the answer could be either but they both mean the same thing just in different words
On a coordinate plane, a circle has a center at (1, negative 2) and a radius of 4 units. Which equation represents a circle with the same radius as the circle shown but with a center at (-1, 1)? (x – 1)2 + (y + 1)2 = 16 (x – 1)2 + (y + 1)2 = 4 (x + 1)2 + (y –1)2 = 4 (x + 1)2 + (y – 1)2 = 16
Answer:
(x + 1)2 + (y – 1)2 = 16
Step-by-step explanation:
Just took the test.
Answer:
It is D.
Step-by-step explanation:
Josh's soccer team had a competition to see which player should be the goalie. Each player tried to block 15 kicks from entering the goal, and the coach recorded the number of successfully blocked kicks. Josh made a dot plot to display the information. What is the interquartile range for the data?
Answer:
sup
Step-by-step explanation:
hey
what factors of 52 add up to equal -8
Answer: 2x26 4x13 1x52
Step-by-step explanation:
Answer:
1 x 52 = 52.
2 x 26 = 52.
4 x 13 = 52.
What is the product of ( 7 − 3 i ) × ( 4 + i ) ?
Answer: 31-5i
Step-by-step explanation:
28+7i-12i-3i^2
28-5i+3
31-5i
Answer:
31 - 5i
Step-by-step explanation:
(7 - 3i) * (4 + i)
Step 1: Multiply complex numbers 7 − 3i and 4 + i like you multiply binomials.
7 * 4 + 7i - 3i * 4 - 3i²
Step 2: By definition, i² is -1.
7 * 4 + 7i - 3i * 4 - 3 ( - 1)
Step 3: Do the multiplications.
28 + 7i - 12i + 3
Step 4: Combine the real & imaginary parts.
28 + 3 + (7 - 12)i
Step 5: Do the additions.
31 - 5i
The product of (7 - 3i) and 4 + i is 31 - 5i.
Solve by factoring
x^2+7x+12=0
Answer:
x=-3,-4
Step-by-step explanation:
math
Answer:
x = -3 or x = -4
Step-by-step explanation:
x^2 + 7x + 12 = 0
(x + 3)(x + 4) = 0
x + 3 = 0 or x + 4 = 0
x = -3 or x = -4
The sum of the length and width of a rectangle is more than 15 units. The length is 3 units more than the width, x. Which model and solution is correct for this situation?
Answer: [tex]6, 9\ \text{units}[/tex]
Step-by-step explanation:
Given
The Sum of length and width is [tex]15\ units[/tex]
length is 3 units more than the width
width is [tex]x[/tex]
length is [tex]x+3[/tex]
Their sum is 15
[tex]\Rightarrow x+x+3=15\\\Rightarrow 2x=12\\\Rightarrow x=6\ \text{units}[/tex]
Length is [tex]x+3=9\ \text{units}[/tex]
Width is [tex]x=6\ \text{units}[/tex]
Find the product, using suitable properties:
(-23)×48
Answer:
-1104
Step-by-step explanation:
(−23)(48)
= (−1104)
Give me Brainllest
Water makes up about 60% of the average adult's body weight. Represent this percent by shading in the squares.
Answer:
shading three boxes
Step-by-step explanation:
It is given that :
The body weight of an average adult = 60%
We have to show this by shading the square boxes shown.
There are 5 square boxes in total which makes up 100%.
So divide 100 by 5, we can 20% for each box.
So, 20% + 20% + 20% will give us 60%
Therefore, shading three boxes will give us 60% which is the water percent in an average adult's body weight.
This is represented by the figure below.
Triangle ABC is circumscribed about circle H, with points of tangency D, E, F.
What is the perimeter of Triangle ABC.
Answer: 30
Step-by-step explanation:
i don’t know, but i know it’s 30
Answer: 28
Step-by-step explanation:
TOP QUESTION^^ ILL GIVE BRAINLIEST
Answer:
Please read below:
Step-by-step explanation:
To calculate the area, you'll need πr². In this case, 3.14 * r²
If the radius is 50 feet, you'll calculate 50 * 3.14² which equals 492.98, or, B
Hope this helps :)
