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3 years ago

How to solve -7(8s+9f) s=-5 f=-3

Mathematics

2 answers:

saveliy_v [14]3 years ago

6 0

Answer:

469

Step-by-step explanation:

plug in values and solve

natulia [17]3 years ago

4 0

The answer would be 469 how this helps!!

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What does this mean? please help

Oksi-84 [34.3K]

Answer:

I dont know. But If this is for all the grades in the subject, then you have probably failed many activities in it.

6 0

1 year ago

The pyramid shown has a square base that is 24 inches on each side. The slant height is 20 inches. What is the surface area of t

wlad13 [49]

About 1695.54 is the answer.

3 0

3 years ago

Help me please please please

Digiron [165]

Answer:

GPA ≈ 2.67

Step-by-step explanation:

Grade points are weighted by credit hours:

GPA = ∑(grade points×credit hours) / ∑(credit hours)

GPA = (3×2 +2×4 +4×3 +2×3)/(2 +4 +3 +3)

= (6 +8 +12 +6)/12 = 32/12 = 2 2/3

GPA ≈ 2.67

3 0

2 years ago

Assume that a simple random sample has been selected from a normally distributed population and test the given claim. Identify t

laiz [17]

Answer:

There is sufficient evidence to conclude that child booster seats meet the specific requirement.

Step-by-step explanation:

Sample: 697, 759, 1266, 621, 569, 432

Formula:

$\text{Standard Deviation} = \sqrt{\displaystyle\frac{\sum (x_i -\bar{x})^2}{n-1}}$

where $x_i$ are data points, $\bar{x}$ is the mean and n is the number of observations.

$Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}$

$Mean =\displaystyle\frac{4344}{6} = 724$

Sum of squares of differences = 415616

$S.D = \sqrt{\frac{415616}{5}} = 288.31$

We are given the following in the question:

Population mean, μ = 1000 hic

Sample mean, $\bar{x}$ = 724

Sample size, n = 16

Alpha, α = 0.05

Sample standard deviation, s = 288.31

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 1000\text{ hic}\\H_A: \mu < 1000\text{ hic}$

We use one-tailed(left) t test to perform this hypothesis.

Formula:

$t_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} }$

Putting all the values, we have

$t_{stat} = \displaystyle\frac{724 - 1000}{\frac{288.31}{\sqrt{6}} } = -2.344$

Now, $t_{critical} \text{ at 0.05 level of significance, 5 degree of freedom } = -2.015$

Calculation the p-value from table,

P-value = 0.033

Since,

Since, the p value is lower than the significance level, we fail to accept the null hypothesis and reject it. We accept the alternate hypothesis.

We conclude that the measurement is less than 1000 hic.

Thus, there is sufficient evidence to conclude that child booster seats meet the specific requirement.

4 0

4 years ago

Wats the answers to this

liraira [26]

Which question??????

7 0

2 years ago