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Mathematics

1 answer:

Vladimir [108]2 years ago

6 0

Answer:

Step-by-step explanation:

There is two wholes and one half.

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Solve for x pleaseeee!

Kaylis [27]

Answer:

x=-20

Step-by-step explanation:

3x+178=6x+238

-3x=60

x=-20

6 0

2 years ago

Cecile packages snack mix at a health food store.

Sedaia [141]

Answer:
her supply has 18 pounds

Explanation:
Assume that the number of pounds in her supply is x.
We are given that:
She uses 1/3 x in salted mix and 2/9 x in unsalted mix.
This means that:
Total amount used = 1/3 x + 2/9 x = 5/9 x of her supply

Now, we are also given that:
She used 10 pounds of her supply.
This means that:
5/9 x = 10
5x = 9*10 = 90
x = 18 pounds

Hope this helps :)

5 0

3 years ago

Read 2 more answers

A tree is 3 ft tall casts a shadow that is 2 ft long. Find the length of the shadow that a 6 ft tree costs.

Anni [7]

Answer:

4 feet

Step-by-step explanation:

Plz brainliest ,Hope I could Help

6 0

3 years ago

In order to estimate the difference between the average hourly wages of employees of two branches of a department store, two ind

liberstina [14]

Answer:

Step-by-step explanation:

Hello!

You have two populations of interest and want to compare them. If you define the study variables as:

X₁: average hourly wages of an employee of the Downtown store.

n₁= 25

X[bar]₁= $9

S₁= $2

X₂: average hourly wages of an employee of the North Mall store.

n₂= 20

X[bar]₂= $8

S₂= $1

Both samples taken are independent, assuming that both populations are normal and that their population variances are equal I'll use the Student's-t statistic with a pooled sample variance to calculate the Confidence interval:

95% CI for μ₁ - μ₂

(X[bar]₁-X[bar]₂) ± $t_{n_1+n_2-2; 1-\alpha /2} * (Sa*\sqrt{\frac{1}{n_1} +\frac{1}{n_2} } )$