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3 years ago

Fill in the blanks to complete the following sentences.

1 answer:

6 0

The ratio of nails to drywall sheet in simplest form is 24.3 : 1 because she uses 24.3 nails for 1 sheet of drywall.

Step-by-step explanation:

Given,

Sheets of drywall used by Jessica = 3 sheets

Nails used by Jessica = 73 nails

Ratio of sheets to nails = 3:73

Dividing by 3

Ratio of sheets to nails = $\frac{3}{3}:\frac{73}{3}$

Ratio of sheets to nails = 1 : 24.3

The ratio of nails to drywall sheet in simplest form is 24.3 : 1 because she uses 24.3 nails for 1 sheet of drywall.

Keywords: ratio, division

Learn more about ratio at:

#LearnwithBrainly

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If b = 7, what is the value of the expression 2(10 – b)?

Stella [2.4K]

Answer:

Step-by-step explanation:

10-7=3

2*3=6

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3 years ago

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Sally Jones pays $50.00 a month for group health insurance. There is a $300 deductible. Her medical bills for the last year were

neonofarm [45]

Given

Find out the what was the insurance company's payment .

To proof

As given

Sally Jones pays $50.00 a month for group health insurance

There is a $300 deductible

Her medical bills for the last year were $2,600.00

Linda's insurance company provided payment of 80% of the bills less the deductible.

Deductible

The amount of money you will pay in an insurance claim before the insurance company starts paying you.

medical bill reducing the deductible = $2,600 - $300

= $2300

80 % is written in the decimal form

$= \frac{80}{100}$

= 0.8

than the equation becomes

Linda's insurance company provided payment = 0.8× 2300

= $1840

Therefore the the insurance company's payment be $1840 .

Hence proved

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3 years ago

Choose all the polynomials that are in standard form?

Allisa [31]

<h3>2 Answers: Choice B and Choice D</h3>

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Explanation:

Standard form will always have the largest exponents listed first on the left side. Then as you move to the right, the exponents will decrease. Choice B shows this with the exponents counting down (3,2). Choice D is a similar story with the exponents counting down (9,2,1,0). Think of -6x as -6x^1, and also think of the 10 as 10x^0.

Something like choice A is a non-answer because the term with the largest exponent 3 is buried in the middle, and not at the left side. The exponents are not in decreasing order. Choice C can be ruled out for similar reasons.

Side note: the largest exponent is the degree of the polynomial. This only applies to single variable polynomials.

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3 years ago

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The average cost of living for a family of four in twelve different cities was found to be $65,351 with a standard deviation of

Andrej [43]

Answer:

$65,351+/-$3,661.73

= ( $61,689.27, $69,012.73)

Therefore, the 90% confidence interval (a,b) = ( $61,689.27, $69,012.73)

Step-by-step explanation:

Confidence interval can be defined as a range of values so defined that there is a specified probability that the value of a parameter lies within it.

The confidence interval of a statistical data can be written as.

x+/-zr/√n

Given that;

Mean x = $65,351

Standard deviation r = $7,711

Number of samples n = 12

Confidence interval = 90%

z(at 90% confidence) = 1.645

Substituting the values we have;

$65,351+/-1.645($7,711/√12)

$65,351+/-1.645($2,225.973962860)

$65,351+/-$3661.727168905

$65,351+/-$3,661.73

= ( $61,689.27, $69,012.73)

Therefore, the 90% confidence interval (a,b) = ( $61,689.27, $69,012.73)

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3 years ago

I need an explanation of this question: the chicago cubs have won more than 100 games

Kobotan [32]

Answer:

x > 100

Step-by-step explanation:

Consider x as "Chicago Cubs".

The alligator sign always points/goes to the number (or food) with the highest value (or bigger meal).

Since Chicago Cubs wins is bigger than 100, you can write the inequality as follows:

x > 100

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4 years ago

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