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4 years ago

Can someone help me with this question?!?

Mathematics

1 answer:

NeTakaya4 years ago

7 0

Answer C
**
Last week she sold 90+210=300 items in total. This week, she sold 90*1.5+210*1.3=408 items. The percent increase in sales is (408-300)/300*100%=36%.

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What is the property shown 3a x 9c = 27ac

Pani-rosa [81]

Multiplication Property of Equality states that if you multiply both sides of an equation by the same number, the sides remain equal.

Identity - a * b = ab

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3 years ago

11(2x + 1) = 4x - 7 <br> show work

Harlamova29_29 [7]

Answer:

0.22

Step-by-step explanation:

22x + 11 = 4x - 7

22x - 4x = -7 + 11

18x = 4

x = 4/18

x = 0.22

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3 years ago

Read 2 more answers

the difference of two numbers is eight the first number x is one less than twice the second number y write and solve a system of

jeka94

<h3>Answer:</h3>

The two numbers are 17 and 9.

<h3>Explanation:</h3>

<em>System of Equations</em>

Let x and y represent the first and second numbers, respectively.

... x - y = 8 . . . . . . . . . the difference of the two numbers is 8

... x = 2y - 1 . . . . . . . . .the first number is one less than twice the second

<em>Solution</em>

The second equation gives an expression for x that can be substituted into the first equation.

... (2y -1) -y = 8

... y -1 = 8 . . . . . . . collect terms

... y = 9 . . . . . . . . . add 1

... x = 2·9 -1 = 18 -1

... x = 17

The first number is 17; the second number is 9.

4 0

4 years ago

What is 8,663,943,526 rounded to the nearest million? A. 8,663,000,000 B. 8,663,944,000 C. 8,664,000,000 D. 9,000,000,000

maksim [4K]

The answer is
<span>C. 8,664,000,000</span>

8 0

3 years ago

United Express, a nationwide package delivery service, charges a base price for overnight delivery of packages weighing 1 pound

Vera_Pavlovna [14]

Answer:

Base price: $13.

Surcharge: $2 per additional pound.

Step-by-step explanation:

The base price can be considered a constant, while the surcharge is a function of the additional weight of the package, over 1 pound.

Then, we can model this as a linear function, with additional weight as the independent variable.

$f(x)=b+sx$

being b: base price, and s: surcharge for each additional pound.

The 7-pound package cost $25. The additional weigth in this case is 7-1=6 pounds.

The 22-pound package cost $55. The additional weigth is 21 pounds.

So we have the first point (6, 25):

$f(6)=b+s(6)=25\\\\b=25-6s$

Then, for the second point (21, 55) we have:

$b=25-6s\\\\f(21)=(25-6s)+s(21)=55\\\\25+(21-6)s=55\\\\15s=55-25=30\\\\s=30/15=2\\\\\\b=25-6(2)=25-12=13$

Then, the prices are:

Base price: $13.

Surcharge: $2 per additional pound.

5 0

4 years ago