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3 years ago

If 10-10ˣ=9.9, find x

Mathematics

1 answer:

madam [21]3 years ago

3 0

we are given

$10-10^x=9.9$

we can move 10 on right side

$-10^x=9.9-10$

$-10^x=-0.1$

we cancel -1

$10^x=0.1$

we can rewrite right side

$10^x=10^{-1}$

we can compare exponents

and we get

$x=-1$ .............Answer

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Estimate the value of 9.9 power of 2 x 1.79 <br> pls some one help me

dybincka [34]

Answer:

The correct answer is 175.4379

Step-by-step explanation:

(9.9)^2 • 1.79

=98.01 • 1.79

=175.4379

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3 years ago

Share $210 in the ratio of 2:5

horrorfan [7]

Answer:

60:150

Step-by-step explanation:

So first you can divide 210 by 7 since it will be spilt into seven parts.

210/7 = 30

So in order to get them into the ratios:

30 x 2 = 60

30 x 5 = 150

So 210 in the ratio of 2:5 would be 60:150

You can check your work by adding 60 + 150 together.

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3 years ago

If two angles are supplementary, and the angle measurements are in the ratio 3:1, what is the measure of the smaller angle?

inysia [295]

Answer:

The measure of smaller angle = 45°

Step-by-step explanation:

Finding the unknown angle

Ratio of the supplementary angles = 3 :1

The angles are 3x , x

Supplementary angles add up to 180°

3x + x = 180

4x = 180

x = 180 ÷ 4

x = 45°

3x = 3*45 = 135°

7 0

2 years ago

Read 2 more answers

Please help!

Marina86 [1]

Refer to the image attached.

Since, we have to divide the polynomial $4x^2-2x+3$ by (x+2) using synthetic division.

We will divide the coefficients 4 -2 3 by -2

First term = 4 will remain same.

Second term = $(-2 \times 4) -2 = -8-2 = -10$

So, second term = -10

Third term = $(-2 \times -10)+3 = 23$

So, third term = 23

So, 4 -10 23 is the correct answer

So, Option 2 is the correct answer.

5 0

3 years ago