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2 years ago

What is the sum of -9 and -18?

Mathematics

2 answers:

Volgvan2 years ago

6 0

-9+-18=-27 You simply add the two negative answers to find your final answer. -27

Tcecarenko [31]2 years ago

3 0

Answer: The answer to the question you asked up top would be -27, however the question in the picture doesn't match. As for the question in the picture, the answer is should be choice B or 4 square root 2i

Step-by-step explanation:

The first one: add the number together since they are both negative and just place a negative sign in front.

The second one: break down the square root of -18 into 9*-2. Then add $\sqrt{-2} + 3 \sqrt{-2}$ which equals $4\sqrt{2}i$

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Nate is watching a baseball game. So far, 15 batters have gotten a hit and 5 batters have not. Out of the next 4 batters, how ma

iren2701 [21]

Answer:

3 batters

Step-by-step explanation:

For the past data, we have observed that:

15 batters have gotten a hit

5 batters have not

The total of batters that we have observed is

n = 15 + 5 = 20

Therefore, this means that based on the observed data, the probability that a batter gets a hit is:

$p(hit)=\frac{n(h)}{n}=\frac{15}{20}=0.75$

where

n(h) = 15 is the number of batters that got a hit

After that, we want to know how many batters we will expect to get a hit in the next 4 batters. We can write it as:

$n(h) = 4 \cdot p(hit)$

And since

p(hit) = 0.75

We find:

$n(h)=4\cdot 0.75 =3$

So, we expect 3 batters to get a hit in the next 4.

7 0

3 years ago

The "middle" term of a trinomial form of (3x+1)(x-4) is:

Zarrin [17]

Answer:

Expand the following expression

(3x+1)(x-4) = 3x^2-12x+x-4

middle term = -11x

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2 years ago

If 8p = 3p + 25, what is the value of p? Select the best answer from the choices provided. p = 4 p = 5 p = 6 p = 8

kiruha [24]

<span>8p = 3p + 25
Subtract 3p from both sides: 5p = 25 Divide both sides by 5: '
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4 0

3 years ago

Read 2 more answers

Just question 7 thanks

ad-work [718]

Let x be the number of boys, the number of girls will be 200-x

Number of boys with blue eyes x/3
Number of girls with blue eyes (200-x)/4
ll blue eyes ==> x/3 + (200-x)/4 = 57
Reduce to same denominator & solve for x
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2 years ago

A rectangle has an area of 72 in². The length and the width of the rectangle are changed by a scale factor of 3.5.

vodka [1.7K]

Answer:

882 in^2

Step-by-step explanation:

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2 years ago