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Komok [63]
3 years ago
10

Can someone please help me??

Mathematics
2 answers:
Makovka662 [10]3 years ago
8 0
I’ve attached my work
Hope it helps!

nignag [31]3 years ago
5 0

Answer:

1st one is 30,

2nd one is 20,

so the 3rd one will be 30+20 so the answer is 50

Step-by-step explanation:

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When adding or subtracting with scientific notation,why is it important to have the same power of 10?
sladkih [1.3K]
<h2>Explanation:</h2><h2></h2>

Because we perform something like common factor, so this guarantee that corresponding digits have regarding coefficients have the same place value. Remember that a number written in scientific notation is given by the product of a number between 1 and 10 and another number that is power of 10. For example, let's write two examples about this:

Addition:

a=2\times 10^3 \\ \\ b=4\times 10^3 \\ \\ \\ Then: \\ \\ a+b=2\times 10^3+4\times 10^3 \\ \\ =(2+4)\times 10^3 \\ \\ =5\times 10^3

Addition:

a=2\times 10^3 \\ \\ b=4\times 10^3 \\ \\ \\ Then: \\ \\ a+b=2\times 10^3+4\times 10^3 \\ \\ =(2+4)\times 10^3 \\ \\ =6\times 10^3

Subtraction:

a=7\times 10^5 \\ \\ b=2\times 10^5 \\ \\ \\ Then: \\ \\ a-b=7\times 10^5-2\times 10^5 \\ \\ =(7-2)\times 10^5 \\ \\ =5\times 10^5

4 0
4 years ago
Given f(x) = -4x+7 and g(x) =x^3 , choose the expression for (fog)(x)
SOVA2 [1]

Answer:

-4x^3 + 7

Step-by-step explanation:

(fog)(x) ➡ write whole value of g(x) instead of x in the f(x) function

-4 (x^3) +7 ➡ -4x^3 +7

5 0
3 years ago
Read 2 more answers
Indicate the method you would use
FinnZ [79.3K]

Answer:

correct choice is 1st option

Step-by-step explanation:

Two given triangles have two pairs of congruent sides: one pair of length 7 units and second pair of length 8 units. The third side is common, i.e the lengths of third sides are equal too.

Use SSS theorem that states that if three sides of one triangle are congruent to three sides of another triangle, then these two triangles are congruent.

Thus, given triangles are congruent by SSS theorem.



7 0
3 years ago
How many solutions does the equation 4x + 8 = −2 − 2 + 5x have? (5 points) Two One None Infinitely many
djverab [1.8K]

Answer:

just one solution

Step-by-step explanation:

4x + 8 = −2 − 2 + 5x

4x - 5x = -2 - 2 - 8

x = 12

6 0
3 years ago
Read 2 more answers
Describe what math step you would do to solve this equation ?
Vanyuwa [196]

Answer:

Multiply each side by 14.7

Step-by-step explanation:

cos 50 = m / 14.7

Multiply each side by 14.7

14.7 cos 50 = m /14.7 *14.7

 14.7cos 50 = m

6 0
4 years ago
Read 2 more answers
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