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3 years ago

40% of what number is 15?

Mathematics

2 answers:

Fiesta28 [93]3 years ago

4 0

Answer:

15 is 40% of 37.5

Step-by-step explanation:

Goshia [24]3 years ago

3 0

15 is 40% of 37.5

100

× x = 15

Multiplying both sides by 100 and dividing both sides by 40,

we have x = 15 ×

100

x = 37.5

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4(2-4x)-3x=65 Whats the answer and how did you solve it?

IRINA_888 [86]

Answer:

x= -3

Step-by-step explanation:

Distribute 4(2-4x) which leaves you with 8-16x-3x=65

combine the like terms which leaves you with 8-19x=65

subtract 8 from both sides 8-19x-8=65-8 which leaves you with -19x=57

lastly divide -19 from both sides which leaves you with x= -3

3 0

3 years ago

F(×)=3×/2+× find f(-4)

3241004551 [841]

Answer:

f(x)=6

Step-by-step explanation:

3(-4)/2+(-4)

-12/-2

f(x)=6

4 0

3 years ago

Read 2 more answers

Convert the complex number z = -12 + 5i from rectangular form to polar form.

Paha777 [63]

Answer:

$z=13(\cos 157\degree +i\sin157\degree)$

Step-by-step explanation:

The given complex number is

$z=-12+5i$

The polar form of this complex number is;

$z=r(\cos \theta +i\sin \theta)$ , where

$r=\sqrt{(-12)^2+5^2}$

$r=\sqrt{144+25}=\sqrt{169}=13$

and

$\theta =\tan^{-1}(\frac{5}{-12})$

This implies that;

$\theta=157\degree$ to the nearest degree.

Hence the polar form is

$z=13(\cos 157\degree +i\sin157\degree)$

7 0

3 years ago

Write an equation in point slope form of the line that passes through the given point and the given slope m

victus00 [196]

Answer:

The answer is

$\huge y - 8 = 4(x + 9) \\$

Step-by-step explanation:

To find an equation of a line in point slope form when given the slope and a point we use the formula

$y - y_1 = m(x - x_1)$

From the question we have the final answer as

$y - 8 = 4(x + 9)$

Hope this helps you

3 0

3 years ago

The school production of 'Our Town' was a big success. For opening night, 392 tickets were sold. Students paid $3.00 each, w

elixir [45]

Answer:

239 students and 153 non-students attended to the school production of "Our Town"

Step-by-step explanation:

1. Let's review the information provided to us to answer the question correctly:

Number of tickets of the school production sold = 392

Student ticket cost = US$ 3

Non-students ticket cost = US$ 5

Total collected = US$ 1,482

2. How many students and how many non-students attended?

For answering the question we will use the following equation:

x = Number of students that attended the school production

392 - x = Number of non-students that attended the school production

3x + (392 - x) * 5 = 1,482

3x + 1,960 - 5x = 1,482

-2x = 1.482 - 1,960

-2x = - 478

x = -478/-2

x = 239 ⇒ 392 - 239 = 153

239 students and 153 non-students attended to the school production of "Our Town"

3 0

3 years ago