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arlik [135]
3 years ago
14

What does this equal to 2(x - 5) + 7 = x + 8

Mathematics
1 answer:
OLEGan [10]3 years ago
8 0

Answer:

x= 11

Step-by-step explanation:

2 (x-5) + 7= x + 8

First we can distribute the 2(x-5) which gives us 2x - 10

2x-10 + 7= x + 8

subtract -10 + 7 which is -3

2x - 3= x + 8

Next, subtract the x to the left side and add the 3 to the right side

x= 11!

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Answer ASAP!
valentinak56 [21]

Answer:

A and D

Step-by-step explanation:

Since tangent is opposite/adjacent,

Tan 40 in this case would be x/3.8 (i used x because we don't know what the value is)

So, you set it up as an algebra problem

Tan40 = x/3.8

Multiply both sides by 3.8

3.8tan40 = x, Option A

And then, angle E is 50 degrees

So tan 50 = 3.8/x

Multiply both sides by x

tan50x = 3.8

Divide both sides by tan50

x= 3.8/tan50

So, A and D are both correct

3 0
2 years ago
If a person can walk with an average speed of 5 meters/second, how far will they walk in 8 minutes?
sineoko [7]

Answer:

2,400

Step-by-step explanation: If a person can walk 5 meters per second and there are 60 seconds in a minute then you would multiply 5 by 60 and get 300. Then you multiply that by 8 and get 2,400.

5 0
3 years ago
Read 2 more answers
Write the equation of the line passing through the point ​(​6,-9​) with slope -5/6.
Brilliant_brown [7]

Answer:

The equation is y = -5/6 x-4

Step-by-step explanation:

The equation of a line in slope intercept form is

y = mx+b where m is the slope and b is the y intercept

y = -5/6 x+b

Substitute in the point

-9 = -5/6(6) +b

-9 = -5+b

Add  5 to each side

-4 = b

The equation is y = -5/6 x-4

3 0
3 years ago
What is the value of y when x = 5 in the equation y = 5x?
kiruha [24]
Y = 5x

x = 5

y = 5(5)

y = 25
4 0
3 years ago
Which pair of triangles can be proved congruent by the SAS postulate?
Olenka [21]
C. â–łADE and â–łEBA

Let's look at the available options and see what will fit SAS.

A. â–łABX and â–łEDX
* It's true that the above 2 triangles are congruent. But let's see if we can somehow make SAS fit. We know that AB and DE are congruent, but demonstrating that either angles ABX and EDX being congruent, or angles BAX and DEX being congruent is rather difficult with the information given. So let's hold off on this option and see if something easier to demonstrate occurs later.

B. â–łACD and â–łADE
* These 2 triangles are not congruent, so let's not even bother.

C. â–łADE and â–łEBA
* These 2 triangles are congruent and we already know that AB and DE are congruent. Also AE is congruent to EA, so let's look at the angles between the 2 pairs of congruent sides which would be DEA and BAE. Those two angles are also congruent since we know that the triangle ACE is an Isosceles triangle since sides CA and CE are congruent. So for triangles â–łADE and â–łEBA, we have AE self congruent to AE, Angles DAE and BEA congruent to each other, and finally, sides AB and DE congruent to each other. And that's exactly what we need to claim that triangles ADE and EBA to be congruent via the SAS postulate.
5 0
3 years ago
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