3 years ago

9x2+8x(5x-4) simplify

Mathematics

1 answer:

Svetach [21]3 years ago

4 0

Answer:

40x --14

Step-by-step explanation:

Multiply 9 and 2 to get 18

Use distribute property

Multiply 8 by 5x -15

Subtract 32 from 18 = -14

You might be interested in

In ΔHIJ, the measure of ∠J=90°, HI = 8 feet, and JH = 1.9 feet. Find the measure of ∠H to the nearest tenth of a degree.

artcher [175]

Answer:

21.9°

Step-by-step explanation:

In ΔHIJ, the measure of ∠J=90°, HI = 8 feet, and JH = 1.9 feet. Find the measure of ∠H to the nearest tenth of a degree.

We solve this above question using the Sine rule

a/sin A = b/sin B

In ΔHIJ, the measure of ∠J=90°, HI = 8 feet, and JH = 1.9 feet.

Hence:

HI/∠J = JH/∠H

= 8/sin 90° = 1.9/sin ∠H

Cross Multiply

∠H = arc sin(sin 1.9 × 90/8)

∠H = 21.9°

5 0

3 years ago

What is the improper fraction 17/10 as a decimal

Rina8888 [55]

17 / 10 = 1 7/10 = 1.7

4 0

3 years ago

Read 2 more answers

What is the equation of a circle that has a diameter of 10 units if its center is at (3,8)?

astraxan [27]

Answer:

Step-by-step explanation:

$(x-3)^2+(y-8)^2 = 25$

6 0

3 years ago

Solve x^2 +14x=15 by completing the square

ivanzaharov [21]

Answer:

x = -15 and x = 1

Step-by-step explanation:

Since we have to use the complete the square method, we first need to rewrite the equation in the form $x^{2}+2ax+a^{2}=(x+a)^{2}$ .

This results in $x^{2} + 14x + 7^{2} = 15 + 7^{2}$ .

Next, we simplify the equation to get $x^{2} +14x+7^{2} = 64$ .

Factoring the left side gives us $(x+7)^{2} = 64$ .

Finally we solve the equations: $x+7=\sqrt{64}$ and $x+7=-\sqrt{64}$ .

This gives us x=1, and x=-15

6 0

3 years ago

Read 2 more answers

Pls answer I cannot do it

lisov135 [29]

a square number has and odd amount of numbers but 5to the power of 9 has an even amount of numbers

5×5×5×5×5×5×5×5×5

7 0

3 years ago