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2 years ago

Please help this is urgent

Mathematics

2 answers:

Bad White [126]2 years ago

6 0

Hey there!

Let's evaluate our keywords and translate these words into math so we can create an equation.

Our key word here is of. In mathematics, when we say of, we mean multiplication. For example, when we say, "1/2 of 10", it translates to 1/2 times 10, which equals 10/2 or 5.

Therefore, when we say 1/4 of the total washers (assuming w is the total amount of washers), we mean that 1/4 the total amount of washers represents how many have to be fixed. That would give us:

1/4(w) = 1/4w

As the problem says, the 6 washers that need to be replaced represent the total amount of washers that there are. That means that the 1/4w must equal 6 because that 6 is the amount that is broken.

Therefore, our answer is B.

Hope this helps!

Sergio [31]2 years ago

4 0

Answer is
B 1/4 W = 6

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Ganezh [65]

Answer:

1.38 to the nearest hundredth.

Step-by-step explanation:

Dividing:

x + 1 ) 3x - 1 ( 3

3x + 3

-4

so (3x - 1) / (x + 1) = 3 - 4 / x+ 1

Integral of (3 - 4 / x+1 ) = 3x - 4 ln(x + 1)

Between limits of 1 and 2 we have:

(3(2) - 4 ln 3) - (3 - 4 ln2)

= 1.6056 - 0.2274

= 1.3782.

5 0

3 years ago

If g(x)=11x+3 find g(x+7) and g(x)+g(7).

Liono4ka [1.6K]

Answer:

g(x + 7) = 11x + 80

g(x) + g(7) = 11x + 83

Step-by-step explanation:

g(x + 7) = 11(x + 7) + 3 = 11x + 77 + 3 = 11x + 80

g(x) + g(7) = 11x + 3 + 11(7) + 3 = 11x + 3 + 77 + 3 = 11x + 83

8 0

2 years ago

Given that y varies directly with x and y = 42 when x = 14, find y when x =90.

Anvisha [2.4K]

Direct Variation equation: y=kx, k=y/x
42/14=3
k=3
y=3x
y=3(90)
y=270

3 0

3 years ago

A professor finds that the average SAT score among all students attending his college is 1150 ± 150 (μ ± σ). He polls his class

solniwko [45]

Answer:

Step-by-step explanation

Hello!

Be X: SAT scores of students attending college.

The population mean is μ= 1150 and the standard deviation σ= 150

The teacher takes a sample of 25 students of his class, the resulting sample mean is 1200.

If the professor wants to test if the average SAT score is, as reported, 1150, the statistic hypotheses are:

H₀: μ = 1150

H₁: μ ≠ 1150

α: 0.05

$Z= \frac{X[bar]-Mu}{\frac{Sigma}{\sqrt{n} } } ~~N(0;1)$

$Z_{H_0}= \frac{1200-1150}{\frac{150}{\sqrt{25} } } = 1.67$

The p-value for this test is 0.0949

Since the p-value is greater than the level of significance, the decision is to reject the null hypothesis. Then using a significance level of 5%, there is enough evidence to reject the null hypothesis, then the average SAT score of the college students is not 1150.

I hope it helps!

7 0

2 years ago

What decimal is equivalent to negative 3/8

Fittoniya [83]

Answer:

-6/16

Step-by-step explanation:

Step 1: Find equivalent to -3/8

(-3*2) / (8*2)

-6/16

Answer: -6/16

7 0

2 years ago

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