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3 years ago

7. Agrupa para sumar.-5 +8 +(-2)

Mathematics

2 answers:

Mandarinka [93]3 years ago

8 0

Answer:

Step-by-step explanation:

-5+8+(-2)

3+(-2)=1

Brums [2.3K]3 years ago

6 0

Answer:

Obtendrías 1

Step-by-step explanation:

Primero resta 5 de 8 para obtener 3,

luego reste por 2 para obtener 1

¡Espero eso ayude!

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A total of 140 seventh- and eighth-grade boys were asked which sport they preferred, basketball or baseball.

ss7ja [257]

Answer:

The answer is, " About 56% of those who prefer baseball are eight graders"

Step by Step Explanation:

Step 1: Turn 56% to a decimal, you get 0.56

Step 2: Multiply 0.56 by 68, the total amount of people who like baseball

Step 3 : you get 38.08 ( Don't mind the extra .08, just round )

Step 4 : You celebrate with a little victory dance!!!!!

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3 years ago

If 2x + 5 = 8x, then 12x = ?A.5B.10C.15D.20

butalik [34]

<h2>Answer:</h2> $10.\text{ Option B is correct}$

<h2>Explanation:</h2>

Given the equation expressed as:

$2x+5=8x$

First, we need to calculate the value of "x" from the given expression.

Step 1: Given the equation 2x + 5 = 8x

Step 2: Subtract 5 from both sides:

$\begin{gathered} 2x+5-5=8x-5 \\ 2x+\cancel{5}-\cancel{5}=8x-5 \\ 2x=8x-5 \end{gathered}$

Step 3: Subtract 8x from both sides

$\begin{gathered} 2x-8x=8x-8x-5 \\ -6x=\cancel{8x}-\cancel{8x}-5 \\ -6x=-5 \end{gathered}$

Step 4: Divide both sides by -6

$\begin{gathered} \frac{-6x}{-6}=\frac{-5}{-6} \\ x=\frac{5}{6} \end{gathered}$

Step 5: Get the value of 12x. Substitute x = 5/6 into the expression to have:

$\begin{gathered} 12x=12(\frac{5}{6}) \\ 12x=\cancel{12}^2(\frac{5}{\cancel{6}^1}) \\ 12x=2\times5 \\ 12x=10 \end{gathered}$

Therefore the value of 12x is 10

3 0

1 year ago

I really don't understand why this question was deleted its not bad I don't know how to explain it

nalin [4]

Answer:

Step-by-step explanation:

Because it is a square root

8 0

3 years ago

1 Shannon runs at a constant rate. She can run 3 miles in 26 minutes. What distance, Y in miles, can she run in 15 minutes, x?

Crazy boy [7]

Answer:

1,75 miles

Step-by-step explanation:

3 miles ______26 minutes

1 miles =>26 :3 =8,5 (8 minutes and 5 seconds)

15:8,5 =1,75 miles

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2 years ago

The owner of a football team claims that the average attendance at games is over 523, and he is therefore justified in moving th

USPshnik [31]

Answer:

C) There is not sufficient evidence to support the claim that the mean attendance is greater than 523.

Step-by-step explanation:

Let μ be the the average attendance at games of the football team

The claim: the average attendance at games is over 523

Null and alternative hypotheses are:

$H_{0}$ : μ=523

$H_{a}$ : μ>523

The conclusion is failure to reject the null hypothesis.

This means that <em>test statistic</em> is lower than <em>critical value</em>. Therefore it is not significant, there is no significant evidence to accept the <em>alternative</em> hypothesis.

That is no significant evidence that the average attendance at games of the football team is greater than 523.

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3 years ago

7. Agrupa para sumar.-5 +8 +(-2)​

7. Agrupa para sumar.-5 +8 +(-2)