3 years ago

I need help with my math, please?

Mathematics

1 answer:

jok3333 [9.3K]3 years ago

3 0

Answer:

Step-by-step explanation:

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Factor the gcf -5k^2+20k-30

Degger [83]

Everything is divisible by five, so pull out five

5(-k^2+4k-6)

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3 years ago

The ratio of students to faculty members in high school is 23:5. If there are 80 faculty members, how many students are there

Rzqust [24]

Answer: 368

Step-by-step explanation: 80 divided by 5 is 16, so you would use 16 to find out how many students there are. To do that, you have to do 23 times 16, which is 368. Hope this helps!

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3 years ago

At a certain zoo, the average mass of one blue whale is measured to be 1.9 × 105

professor190 [17]

Answer:

2.7930 × $10^{4}$

Step-by-step explanation:

1.9 × 105 × 140 = 27,930

Scientific notation: 2.7930 × $10^{4}$

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2 years ago

Find a of this angle.

Mice21 [21]

In a triangle, the total angle is 180 degrees. A straight line is always 180 degrees. With this in mind, the following can be obtained:

$a + 2x + {57}^{o} = {180}^{o} \\ 5x + a = {180}^{o}$

These are simultaneous equations.

$a + 2x + {57}^{o} = 5x + a \\ 3x = {57}^{o} \\ x = {19}^{o} \\ 5x + a = {180}^{o} \\ 5( {19}^{o} ) + a = {180}^{o} \\ a = {85}^{o}$

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3 years ago

Read 2 more answers

ASAP!! ILL GIVE BRAINLEST

densk [106]

Answer:

A^-1:B^-1

Step-by-step explanation:

im not 100% sure but i think this is the right answer :)

8 0

3 years ago