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Anna11 [10]
2 years ago
9

Solve for the value of d. ​

Mathematics
1 answer:
Yuki888 [10]2 years ago
5 0

Answer:

d+7+3d+5=180

4d+12=180

4d=180-12

4d=168

d=42

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IgorLugansk [536]

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3 years ago
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alisha [4.7K]

Answer:

a. x^{2}  + 3y^{3}

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d. -6t - 5

Step-by-step explanation:

When a number has the same variable as another, you can add or subtract them

So for the first one, you can do

5x^{2} -4x^{2} = 1x^{2}  = x^{2}

(But don't forget the 3y^{3}!)

So it is:

x^{2}  + 3y^{3}

Continue this process for the rest of them

7 0
2 years ago
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Answer:

1.2 * 10^3

Step-by-step explanation:

3.12 * 10^8

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2.6 * 10^5

Start by doing 3.12 / 1.6 = 1.2 and that is the correct number of sig digs.

Now get the power on the 10. When dividing, the powers subtract.

10^(8 - 5)

10^ 3

The answer is 1.2 * 10^3

7 0
3 years ago
PLEASE HELP IM CONFUSED! Find what the measurements of angles a-c are and state the reason
nata0808 [166]

Answer:

<a = 90°   (180-90 supplementary angle)

<b = 90°   (180-90 supplementary angle)

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<c = 42°     (interior angles of a triangle equal 180.  180-48-90=42)

Step-by-step explanation:

<a = 90°   (180-90 supplementary angle)

<b = 90°   (180-90 supplementary angle)

<d = 48°   (180-132 supplementary angle)

<e = 132°  (opposite angle)

<c = 42°     (interior angles of a triangle equal 180.  180-48-90=42)

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2 years ago
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Step-by-step explanation:

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3 years ago
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