1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Mashutka [201]
4 years ago
15

Can someone help with math?

Mathematics
1 answer:
algol [13]4 years ago
5 0

Answer:

A. {4,3}

Step-by-step explanation:

x -2y = -2

    y = - 3x +15

x - 2(-3x+15) = -2

x +6x - 30 = -2

7x = 28

x = 4

y = - 3x +15 = - 3*4 + 15 = -12 + 15 = 3

{4,3}

You might be interested in
Find the percent of each number <br> 30% of 80
Wewaii [24]
30% of 80
30% = 0.3
0.3 • 80 is the same as 30% of 80.
0.3 • 80 = 24

30% of 80 is 24.

Hope this helps!
3 0
4 years ago
F(x) = 2x^ 2 - 3x + 6 find f(-7)
aleksandr82 [10.1K]

Answer:

f(-7) = \bold{125}

Step-by-step explanation:

Given:

f(x) = 2x^2 - 3x + 6

f(-7) = 2(-7)^2 -3(-7) +6 \\ f(-7) = 2(49) -3(-7) +6 \\ f(-7) = 98 +21 +6 \\ f(-7) = 125

5 0
3 years ago
Read 2 more answers
How many meters of wrapping paper is needed to cover a present of this shape?
sattari [20]

Answer:

what are the options????

4 0
3 years ago
Read 2 more answers
Pls help. i really need help on this!!
lina2011 [118]

Answer:

a.) $10.50

b.) $45.00

c.) about 66.67%

Step-by-step explanation:

a.) regular price = 15.00

    discount = 30% or 0.3

    15 x 0.3 = 4.50 ----------> this is the amount that you will have off

    15.00 - 4.50 ---------> by subtracting from original price, you have sale price

    = $10.50

b.) bought price = 25.00

    marked up = 80% or 0.8

    25.00 x 0.8 = 20 -------> this will give you 80% of 25

    25.00 + 20.00 ------> she sells for 80% higher, so add the numbers

    = $45.00

c.) original price = 36.00

    bought price = 36.00 - 12.00

    = 24

    24 / 36 -----> divide bought price by original to find what percentage it is

    = .66666 which is rewritten as 66.667%

    you can check this by multiplying that percentage by the original price

hopefully this helps a little bit

3 0
3 years ago
A cone and a sphere both have a radius of 1. If you fill the cone with liquid, and pour it into the sphere, it fits exactly. Wha
PtichkaEL [24]

Answer and Step-by-step explanation:

First, solve for the volume of the sphere, then solve for the height of the cone using the volume of the sphere (which is said to be equal to the volume of the cone) and the radius given.

<u>Volume formula of Sphere</u>

V = \frac{4}{3} \pi r^2

<u>Substitute 1 in for r</u>

\frac{4}{3} \pi (1)^2 = \frac{4}{3} \pi  = 4.189 = Volume

<u>Finding the Height of a Cone</u>

Volume formula for Cone: V = \pi r^2\frac{h}{3}

<u />

<u>Solve for </u><u><em>h</em></u>

Multiply both sides by 3, then divide by pi and r^2.

h = \frac{3V}{\pi r^2}

<u>Plug in the volume and the radius.</u>

h = \frac{3(4.189)}{\pi (1)^2}

<u>Simplify</u>

h = \frac{12.567}{\pi }

h ≈ 4

<u>4 is approximately the height.</u>

<u></u>

<u></u>

<u><em>#TeamTrees #PAW (Plant And Water)</em></u>

6 0
3 years ago
Other questions:
  • A manager states that his process is really working well. Out of 1,500 parts, 1,477 were produced free of a particular defect an
    13·2 answers
  • A child lies on the ground and looks up at the top of a 17-ft tree nearby. The child is 14 ft away from the tree. What is the an
    14·2 answers
  • How would I solve this equation?
    8·1 answer
  • What is the value for y?<br><br><br><br> Enter your answer in the box.<br><br> y =
    14·2 answers
  • Point C is the center of the circle. What is the measure of ∠ACB if mAB is equal to 102° ?
    14·1 answer
  • 50 POINTS<br> Simplify. 57‾‾√ <br> 35√7 <br> 5√7 <br> 7√5 <br> 12√7
    15·2 answers
  • How to find the absolute location of -12 + -6=-18
    7·1 answer
  • Can you find the y variable? ​
    14·1 answer
  • If 8x+5(3+x)-a=15+5x, then a = ?
    11·1 answer
  • Pls help some one and can you explain how you do it
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!