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3 years ago

13

Roxie is buying toys. 2 balls and 4 dolls cost $8.20. 3 balls and 1 doll cost $6.50. Write a system of equations to model this s

ituation.

1 answer:

Nadya [2.5K]3 years ago

5 0

X+z=thanks for points

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A project has an initial cost of $60,000, expected net cash inflows of $14,000 per year for 9 years, and a cost of capital of 14

vredina [299]

Answer:

74

Step-by-step explanation:

60,000 + 14,000

ANS 14%

ANSWER: 74

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3 years ago

11th grade geometry:

Aliun [14]

Answer:

<em>The perimeter is 72 units and the area is 149 square units.</em>

Step-by-step explanation:

$\triangle SBA$ has coordinates $S(15,-8),B(-2,21)$ and $A(0,0)$

Using the distance formula.........

Length of side $SB = \sqrt{(15+2)^2+(-8-21)^2}= \sqrt{17^2+(-29)^2}= \sqrt{1130}$

Length of side $BA= \sqrt{(-2)^2+(21)^2}= \sqrt{445}$

Length of side $AS =\sqrt{(15)^2+(-8)^2}=\sqrt{289}=17$

So, the perimeter of the triangle will be: $(SB+BA+AS)= \sqrt{1130}+ \sqrt{445}+17 =71.71... \approx 72$ units. <em>(Rounded to the nearest unit)</em>

The height of the triangle for the corresponding base $SB$ is 8.89 units.

<u>Formula for the Area of triangle</u>, $A= \frac{1}{2}(base\times height)$

So, the area of the $\triangle SBA$ will be: $\frac{1}{2}(\sqrt{1130}\times 8.89)= 149.42... \approx 149$ square units. <em>(Rounded to the nearest unit)</em>

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3 years ago

Kurt wants to informally prove the converse of the Pythagorean Theorem by producing some evidence that supports it.

Elis [28]

Answer:

A and C

Step-by-step explanation:

I had it on a test

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3 years ago

PLZZ HELPP YOU WILL BE THE BRAINLEIST!!!!!!!

sasho [114]

i need a graph so i can see then i will solve it

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3 years ago

Read 2 more answers

Solve for x. x/7 - y = a<br><br> Please help as soon as possible. Thanks! =D

ololo11 [35]

Hello!

Answer:

x=7(a+y)

Step-by-step explanation:

Hope this helps!

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3 years ago