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3 years ago

A d + b = 180

Mathematics

1 answer:

serg [7]3 years ago

7 0

I know B is true, but i’m unsure for the other choices.

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A bee beats its wings 250 times each second. What is the average time for a single beat of a bee's wing?

Marat540 [252]

I'm not sure, but the average time can be 1/250 seconds.

8 0

3 years ago

Read 2 more answers

Plzzzzzz help I don’t understand I know what to do I need to use PEMDAS but my answer is still wrong

Effectus [21]

simplify exponent: 20*(9-4)/50

simplify parentheses: 20*5/50

multiply: 100/50

divide: 2

6 0

3 years ago

What are the solutions of the equation?

Margaret [11]

Answer:

Option (C) is correct.

The solution of the quadratic equation $12x^2+11x-5=0$ is $x=\frac{1}{3}$ and $x=\frac{-5}{4}$

Step-by-step explanation:

Consider the given quadratic equation $12x^2+11x-5=0$

We can solve the quadratic equation using middle term splitting method,

11x can be written as 15x-4x , we get,

$\Rightarrow 12x^2+11x-5=0$

$\Rightarrow12x^2+15x-4x-5=0$

Taking terms common, we get,

$\Rightarrow3x(4x+5)-1(4x+5)=0$

Thus, $\Rightarrow (3x-1)(4x+5)=0$

Thus, we get $\Rightarrow (3x-1)=0$ or $\Rightarrow (4x+5)=0$

this gives $\Rightarrow x=\frac{1}{3}$ or $\Rightarrow x=\frac{-5}{4}$

Thus, the solution of the quadratic equation $12x^2+11x-5=0$ is $x=\frac{1}{3}$ and $x=\frac{-5}{4}$

4 0

3 years ago

A problem requires finding the time in hours. Which would not be a reasonable answer?

postnew [5]

Answer:

-7

Step-by-step explanation:

How would you get -7 hours?

6 0

3 years ago

Please answer ASAP! Thank you in advance, and remember to consistently wash your hands and be aware of your surroundings.

luda_lava [24]

Answer: z=14

Step-by-step explanation:

To get 7 out of the denominator, you have to do the inverse operation. So multiply both sides by 7, the left gets cancelled out and your left with z and the right side equals 14. Stay safe!!

8 0

3 years ago