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2 years ago

Please answer both for 15 points

Mathematics

1 answer:

Debora [2.8K]2 years ago

8 0

Answer:

Hey look i am sorry for not doing them both i only know the second it is b 3000

Step-by-step explanation:

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Find the value of c and AB if B is between A and C,AB=2r,AC=-5and BC=7

elena-14-01-66 [18.8K]

AB=2r

BC=7

AC=AB+BC

-5=2r+7

-12=2r

-6=r

AB=-12

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3 years ago

(solving for y) <br> 4x-5=7+4y

alexira [117]

y = x - 3

1. Subtract 7 from the right to the left.
* 4y = 4x - 12
2. Divide the 4 (constant) next to the 'y' to the other side.
* y = 4/4x - 12/4
* y = x - 3

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2 years ago

A man bought a house for 3600 Naira he repairs the house with 150 Naira if he sold the house for 4950 Naira . Find his percentag

kozerog [31]

Step-by-step explanation:

profit%=

$\frac{selling \: price - cost \: price}{cost \: price} \times 100\%$

$\frac{4950 \: naira - 3600 \: naira + 150 \: naira}{3750 \: naira} \times 100\%$

$\frac{4950 - 3750}{3750} \times 100\%$

$\frac{1200}{3750} \times 100\%$

=36%

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2 years ago

Jack is 4 times as old as lacey. 7 years ago the sum of their age was 61. how old are they now?

BaLLatris [955]

I am guessing Jack is 51 and Lacey is 17.

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2 years ago

What is the missing reason in the proof?

IrinaVladis [17]

We can identify that the missing reason in the proof is: Definition of Congruent angles.

<h3>How to give proof of a congruent triangle?</h3>

We know that an angle measure of 90° of ∠ABC in the triangle means that it is a right angle triangle.

We also see that ∠ADB is also a right angle and is equal to 90°.

Now, since they have exactly the same measure, these angles are congruent. Then we can say that the angles are congruent and as such:

∠ABC ≅ ∠ABD

Thus, we can identify that the missing reason is: Definition of Congruent angles.

Read more about Triangle proof at; brainly.com/question/1248322

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1 year ago