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4 years ago

What is the value of 1-18+25 if you subtract then add? If you add then subtract? Why is the order of operations necessary?

1 answer:

7 0

In this problem it just goes left to right, 1-18+25 = -17+25 = 8
(1-18)+25-17+25=8
When you do addition and subtraction they are reversible so you just go left to right

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Which of the following linear equations describes that relationship?

JulsSmile [24]

Answer:

D. f(x) = 4x - 3

Step-by-step explanation:

Use two pairs of points to work out the equation:

(1, 1) and (2, 5)

Find the slope:

m = (5 - 1) / (2 - 1) = 4/1 = 4

Find the y-intercept:

1 = 4*1 + b
b = 1 - 4
b = - 3

The line is:

f(x) = 4x - 3

Correct choice is D

8 0

2 years ago

Wyatt offers 8 types of sandwiches and 4 types of tacos. He will increase his selection of sandwiches by 1 per month. He will in

Klio2033 [76]

Answer:

In 4 months Wyatt offer an equal number of sandwiches and tacos.

Step-by-step explanation:

We are given the following in the question:

Types of sandwiches = 8

Rate of increase of sandwich = 1 per month

Thus, number of sandwiches in x months will be given by

$n_1(x) = 8 + x$

Types of tacos = 4

Rate of increase of tacos sandwich = 2 per month

Thus, number of tacos in x months will be given by

$n_2(x) = 4 + 2x$

Equating the two equations, we get,

$n_1(x) = n_2(x)\\8 + x = 4 + 2x\\\Rightarrow x = 4$

Thus, in 4 months Wyatt offer an equal number of sandwiches and tacos.

4 0

4 years ago

If sales tax is 6% and you buy a shirt for $25 how much do you owe?

Leona [35]

Answer:

26.50

Step-by-step explanation:

First we need to calculate the sales tax

25 * 6%

Changing to decimal from

25 * .06

1.50

Then we add the tax to the cost of the shirt

25+1.50

26.50

We owe 26.50

7 0

3 years ago

What does this sign mean?

nikdorinn [45]

If stock prices are falling that’s a good time to buy

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4 years ago

Students are asked to simulate picking their favorite color from a list of six different colors. Which of the following devices

8_murik_8 [283]

Answer:

Step-by-step explanation:

A number cube has six sides so that would work rolling a die.. Also six pieces of paper drawn randomly without looking would work.

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3 years ago