Answer:
X+y=25
2x+2y=50
smaller number is X
bigger one is y
3x=2y
3x-2y=0
2x+2y+3x-2y=50+0
5x. =50
X=10
X+y=25
y. =25-10
y=15
Walmart pays $2.50 for a 30 pack of individual chips. They markup the chips by 319%? How much is the 30 pack of chips at Walmart? Include a unit/label with your answer. ROUND TO THE NEAREST CENT
Answer:
$7.98
Step-by-step explanation:
I am not sure if this is right but hopefully this helps!
Alice has taken a job with a starting salary of $17,600 and the annual raise of $850. What will her salary be on the 5th year of her job?
Answer:
21,850
Step-by-step explanation:
850 x 5 = 4,250
17,600 + 4250 = 21,850
When a=2 and b=-3, which expression has the largest value?.
A. 2a+3b
B. 3a+2b
C. 2a-3b
D. 3a-2b
help.
Answer: C
Step-by-step explanation:
At a = 2 and b = -3, the correct expression which has the largest value is,
⇒ 2a - 3b
What is an expression?Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.
Given that;
The expressions are,
A. 2a+3b
B. 3a+2b
C. 2a-3b
D. 3a-2b
Put a = 2 and b = - 3 in expressions as;
A. 2a + 3b
⇒ 2 × 2 + 3 × - 3
⇒ 4 - 9
⇒ - 5
B. 3a+2b
⇒ 3 × 2 + 2 × - 3
⇒ 6 - 6
⇒ 0
C. 2a-3b
⇒ 2 × 2 - 3 × - 3
⇒ 4 + 9
⇒ 13
D. 3a-2b
⇒ 3 × 2 - 2 × - 3
⇒ 6 + 6
⇒ 12
Thus, Option C has the largest value.
Learn more about the mathematical expression visit:
brainly.com/question/1859113
#SPJ2
The community service club is raising money for a children's hospital. Earlier in the year, the club had raised $240 for the charity. The club then held a bake sale and after the sale they were able to donate a total of $750 to the charity. Write an equation and solve for the amount raised at the bake sale.
Are 3x + 5 and 2x + 15 + x - 5 equivalent? Explain how you know.
Answer:
Step-by-step explanation:
No, as 15 + -5 OR 15 - 5 is not 5, it is 10.
Hope that helps!
can you please show work
Answer:
A) 3.44 ft²
Step-by-step explanation:
before cutouts, the area was 4 x 4 = 16 ft²
the circles have a diameter of 2 ft each, and a radius of 1 ft
each circle has an area pf (3.14)(1²) = 3.14 ft²
3.14 x 4 = 12.56 ft²
16 - 12.56 = 3.44 ft² left
What is the sum of the measures of the interior angles of this heptagon?
Answer:
900 degrees
Step-by-step explanation:
3.
The value of (x + 6)(x + 6) is
Answer:
We do simple multiplication to get x² + 12x + 36.
Hope this helps!
Answer:
[tex]\huge\boxed{\sf x^2 + 12x + 36}[/tex]
Step-by-step explanation:
[tex]\sf (x+6)(x+6)\\\\= x(x+6) + 6(x+6)\\\\= x^2 + 6x + 6x + 36\\\\= x^2 + 12x + 36\\\\\rule[225]{225}{2}[/tex]
Hope this helped!
~AH1807And item is regularly priced at $81. Maria brought it at a discount of 85% off the regular price you say a LEKS calculator to find out how much were you paid
Answer:$12.15
Step-by-step explanation:
Given
The regular price of an item [tex]\$81[/tex]
Maria gets a discount of [tex]85\%[/tex]
Amount paid after the discount is
[tex]\Rightarrow 81(1-85\%)\\\Rightarrow 81(1-0.85)=85(0.15)\\\Rightarrow \$12.15[/tex]
A cylinder has a base radius of 7 inches and a height of 3 inches. What is its volume in cubic inches, to the nearest tenths place?
I’m bad at math.
Answer:
This the ans
Step-by-step explanation:
V
≈
461.81
in³
Answer:
Formula for Volume of Cylinder = pi x r^2 x h
Volume = 3.14159 x 7^2 x 3
Volume = 461.81373 in^3
Volume = 461.8 in^3
Ms. Xu is making dinner for her family, and she needs 3 pints of rice for her recipe. All of her measuring devices are in cups. How many cups of rice will she need?
Answer:
6 cups
Step-by-step explanation:
Recall:
1 pint = 2 cups
Required recipe = 3 pints of rice
To make the measurement using a cup ;
The number of cups of rice needed will be ;
1 pint = 2 cups
3 pints = x cups
Cross multiply
x = 3 *2
x = 6
Hence, 6 cups of rice will be needed
If the mean of four numbers 2,4,x, and 6 is 5, then x is...
Answer:
4 numbers, mean of 5.
4x5= 20. so the total of all 4 numbers is 20.
2+4+6= 12
so in order for the total to be 20, the missing number has
to be 8 (20-12=8)
Please help, I need the answer:
Amber tried to evaluate an expression step by step
-3 - (-5) + 4
= -3 + 5 + 4
= -3 + 9
= 6
Find Amber’s mistake
Answer: she didnt get it wrong so its none of the above
Step-by-step explanation:i did it on khan if i got it right mark me brainliest pls
Identify the vertex (the 2 beside the "x" means squared)
y=-x2 + 18x - 72
Answer:
Write the problem as a mathematical expression.
y=−x²+18x−72
Rewrite the equation in vertex form.
y=−(x−9)²+9
Use the vertex form, y=a(x−h)2+k , to determine the values of a, h, and k.
a=−1
h=9
k=9
Find the vertex (h,k).
(9,9)
Good Luck !
Step-by-step explanation:
Can 3 over 11/2 and 6 over 11 be a proportion?? Please explain!!! ASAP
Answer:
Yes! these are in the same proportion
Step-by-step explanation:
Lhs = 3 over 11/2 = 3/(11/2)
=>3× (2/11)
=> 6/11
=> Rhs
Solve for z:
-0.25z = -1.25
Answer:
the answer is 5
Step-by-step explanation:
-0.25/(-0.25)=-1.25/(-0.25)
z=5
Answer:
5
Step-by-step explanation:
0.4x - 1.2 = 0.15x + 0.8 ?????????
Answer:
x = 8
Step-by-step explanation:
0.4x - 1.2 = 0.15x + 0.8
0.4x - 1.2 + 1.2 = 0.4x
0.15x + 0.8 + 1.2 = 0.15x + 2
0.4x = 0.15x + 2
0.4x - 0.15x = 0.25x
0.15x + 2 - 0.15x = 2
0.25x = 2
0.25x / 0.25 = x
2 / 0.25 = 8
x = 8
Compare 1 over 7 and 1 over 8
Answer:
1/7 > 1/8
Step-by-step explanation:
In fractions, is the numerator is one on both numbers, then whichever denominator is largest means the fraction is the smallest.
Free 100 points! Solve this equation
2x + x + 20 = 200
ANSWER is 60
2x + x = 3x
200-20=180
180 divided by 3x = 60
You may copy and paste the answer and explanation .
Have a nice day .
Answer:
60
Step-by-step explanation:
tysm! have a great day
thank you
have a good day...❤
david and jason have marbles in a ratio of 2:3. together they have a total of 35 marbles . how many marbles dose David have
Answer:
14 marble
Step-by-step explanation:
here's your solution
=> Total number of marble = 35
=> ratio of David and Jason = 2 : 3
=> let the ratio be in x
=> now, 2x + 3x = 35
=> 5x = 35
=> x = 35/5
=> x = 7
=> number of marble with David = 7*2 = 14
=> number of marble with Jason = 7*3 = 21
hope it helps
Answer:
number of marbles that David had=
[tex]35 \times \frac{2}{5} \\ 14marbles[/tex]
CAN SOMEONE HELPPPPPPP?!?!?!!?!?
Answer:
Option (2)
Step-by-step explanation:
Amount of apples in a box = [tex]2\frac{3}{4}[/tex] pounds
= [tex]\frac{11}{4}[/tex] pounds
Apples used by Sage = [tex]\frac{1}{5}th[/tex] Part of the total amount
= [tex]\frac{1}{5}[/tex]th part of the apples in the box
= [tex]\frac{1}{5}\times \frac{11}{4}[/tex]
= [tex]\frac{11}{20}[/tex] pounds
Therefore, Sage used [tex]\frac{11}{20}[/tex] pounds of the apples.
Option (2) will be the answer.
Simplify this expression. 3-³
Answer:
-27 is your answer. If I'm right so,
Please mark me as brainliest. thanks!!!
A car travels 30 miles in 1/2 hour. What is the average speed at which the car is traveling in miles
per hour?
Answer:
the car is traveling 60 miles per hour
Step-by-step explanation:
Since it is going 30 miles in half an hour, we just need to double both values to find the speed for an hour
30*2=60
1/2*2=1
60 miles per hour
hope this helps pls give crown <3
Find the volume of the regular hexagonal pyramid if the lateral edge is 15 feet.
Answer:
Volume of the given pyramid = 1122.37 cubic feet
Step-by-step explanation:
Volume of the regular hexagonal pyramid = [tex]\frac{1}{3}(\text{Area of the base})(\text{Base})[/tex]
Measure of internal angle of a polygon = [tex]\frac{(n-2)\times 180}{n}[/tex]
Here, n = number of sides of the polygon
For a hexagon, n = 6
Measure of interior ∠C = [tex]\frac{(6-2)\times 180}{6}[/tex]
= 120°
Measure of ∠BCD = [tex]\frac{120}{2}[/tex]
= 60°
By applying tangent rule in ΔCED,
tan(∠ECD) = [tex]\frac{\text{Opposite side}}{\text{Adjacent side}}[/tex]
tan(60°) = [tex]\frac{DE}{CE}[/tex]
[tex]\sqrt{3}=\frac{DE}{6}[/tex]
DE = [tex]6\sqrt{3}[/tex] feet
And cos(60°) = [tex]\frac{EC}{CD}[/tex]
[tex]\frac{1}{2}=\frac{6}{CD}[/tex]
CD = 12 feet
Area of ΔBCD = [tex]\frac{1}{2}(\text{Base})(\text{Height})[/tex]
= [tex]\frac{1}{2}(6\sqrt{3})(12)[/tex]
= [tex]36\sqrt{3}[/tex] feet
Area of hexagonal Base of the pyramid = [tex]6(36\sqrt{3})[/tex]
= 216√3 square feet
Since, lateral height of the pyramid (AC) = 15 feet
By applying Pythagoras theorem in ΔADC,
AC² = AD² + CD²
(15)² = AD² + (12)²
AD = [tex]\sqrt{225-144}[/tex]
AD = 9 feet
Volume of the given pyramid = [tex]\frac{1}{3}(216\sqrt{3})(9)[/tex]
= 648√3 cubic feet
= 1122.37 cubic feet
Write the quadratic equation whose roots are 3 and −3, and whose leading coefficient is 2
(Use the letter x to represent the variable.)
Answer:
y = 2(x+3)(x-3)
Step-by-step explanation:
y = a (x-x1) * (x-x2) * (x-x3) * ... (x-xn)
x 1 to n represents the roots
Cindy rides her bike with a
constant speed of miles per
ou How far an the travel in 1 1
hours?
Proving Two Triangles Are Congruent: What additional is needed to prove that ABC = DBF using the SAS congruence theorem?
Answer:
the answer is the side length of ab and db
Answer: D on edge
Step-by-step explanation:
Which could be an appropriate description? (A. the circumference of a circle in square inches) (B. the lateral area of a cylinder in meters) (C. the rate of gasoline consumption in gallons) (D. the volume of a cone in cubic feet)
Answer:
(D. the volume of a cone in cubic feet)
Step-by-step explanation:
A should be inches, not square inches
B should be square meters, not meters
C should be miles per gallon (or KM per gallon), not just gallons
We are painting a rectangular wall of a large room. The dimensions of the wall are 35feet long and 21.5 feet wide. If the total cost of the paint was 421.40 what was the cost in dollars of the paint rounded to the nearest cent
Answer:
56 cent per ft²
Step-by-step explanation:
Wall dimension = 35 feets * 21.5 feets
Total cost of paint used = 421.40
Area of wall = Area of rectangle = Length * width
Area of wall = 35 feets * 21.5 feets
Area of wall = 752.5 ft²
Cost of paint per square feet:
Total coast of paint / Area of wall
$421.40 / 752.5 ft²
= $0.56 per ft²
= 0.56 * 100 = 56
Ellie's new kitten is 412 inches long. Her rabbit is 325 inches longer than her kitten. Which equation can be used to find the length of Ellie's rabbit, r?
