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4 years ago

Which expression represents the following situation add seven to the product of a number of ten

Mathematics

1 answer:

NNADVOKAT [17]4 years ago

6 0

$10x + 7$
$10x = - 7$
$x = - \frac{7}{10}$

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Mrs. Diaz has 4 brownies left. She wants to share the brownies equally among her 5 children.

xenn [34]

Answer:

I thinlk its 4/5 brownie sorry if wrong.

Step-by-step explanation:

Hope you do good! have a nice day !

-Ash~

5 0

3 years ago

8-3 + 4 = 8 - 7 = 1<br> Do you agree with Dora?<br> Explain your answer.

grin007 [14]

8-3+4=8-7=1

8-3+4=9

9-7= 2

no

7 0

3 years ago

Read 2 more answers

Please explain question nine, I’m struggling with math and I wanna dieeee

-BARSIC- [3]

It’s 17 because the ranking of the two teams add up to 17

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4 years ago

Two teaching methods and their effects on science test scores are being reviewed. A random sample of 18 students, taught in trad

Leona [35]

Answer:

the value of the t test statistic is - 3.419

Step-by-step explanation:

Given that;

n₁ = 18, u₁ = 78.3, s₁ = 6.4

n₂ = 11, u₂ = 84.3, s₂ = 5.3

α = 0.1

Now The hypothesis are;

H₀ : u₁ = u₂

H₁ : u₁ < u₂

To compute the value of the t test statistic;

t = [(x₁ - x₂) / s × √(1/n₁ + 1/n₂)]

where

s = √ [ ((n₁-1) × s₁² + (n₂ - 1 ) × s₂²) / ( n₁ + n₂ - 2)]

s = √ [ ((18-1) × 6.4² + (11 - 1 ) × 5.3²) / ( 18 + 11 - 2)]

s = √ [ (7 × 40.96 + 10 × 28.09 ) / 27 ]

s = √ [ (286.72 + 280.9) / 27 ]

s = √(567.62/27)

s = √21.0229

s = 4.585

Now t test statistics t = [(x₁ - x₂) / s × √(1/n₁ + 1/n₂)]

t = [(78.3 - 84.3) / 4.585 × √(1/18 + 1/11)]

t = -6 / (4.585 × 0.3827)

t = - 6 / 1.7546795

t = - 3.419

Therefore the value of the t test statistic is - 3.419

as as level of significance α = 0.1

df = 18+11-2 = 27

∴ T(csal) = t(0.1, 27) = -1.313

That is

t(statistics) < t(cal)

{ - 3.419 < -1.313 }

5 0

3 years ago

What is the quotient (125-8x^3) divided by (25+10x+4x^2)

Alenkinab [10]

Answer:

-2x + 5

Step-by-step explanation:

When you set this problem up:

$\frac{125-8x^{3} }{25+10x+4x^{2} }$

It's easy to see that you can't really divide them due to their differing variables. So, we need to factor the numerator to give us equivalent variables:

$factor: -8x^{3} +125 = -(2x-5)(4x^2 +10x+25)$

WAIT! Look at the longer factor:

$4x^2+10x+25$

It is equivalent to our denominator! Now, that has made the job incredibly easier. Simply cancel out the like terms in the problem and we have our answer:

(-2x + 5)

6 0

4 years ago