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3 years ago

Evaluate (4x+1)(4x-1)when x=-3

Mathematics

2 answers:

STALIN [3.7K]3 years ago

4 0

(-12+1)(-12-1)
-11(-13)
143

butalik [34]3 years ago

4 0

Answer:

-24

Step-by-step explanation:

(4x + 1)(4x-1)

(4x-3 +1) (4x-3 +-1)

(-12+1) (-12 + -1)

-11 + -13

-24

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Help pls ill give extra points

Anastasy [175]

1) A *the first option*
2)B *the second option*

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3 years ago

You are in charge of drinks for a community barbecue. You need to supply at least 120 cups of beverage to provide enough for the

olga nikolaevna [1]

Answer:

You have 112 cups of beverage

Step-by-step explanation:

* Lets explain how to solve the problem

- You need to supply at least 120 cups of beverage to provide enough

for the projected number of people that will attend

- Assume that a cup can fill by 8 fl. oz. (American standard)

- You have received the following donations

- Enough mix to make 4 gallons of lemonade

∴ You have 4 gallons of lemonade

∵ 1 gallon = 128 oz.

∴ 8 gallons = 4 × 128 = 512 oz.

∴ You have 512 oz. of lemonade

∵ You can fill one cup by 8 oz.

∴ The number of cups of lemonade = 512 ÷ 8 = 64 cups

- 6 bottles of fruit juice that each contain 64 fl. oz

∵ 6 × 64 = 384

∴ You have 384 oz. of fruit juice

∵ You can fill one cup by 8 oz.

∴ The number of cups of fruit juice = 384 ÷ 8 = 48 cups

- Now add the number of lemonade cups to the number of fruit

juice cups

∵ There are 64 of lemonade cups

∵ There are 48 fruit juice cups

∴ The total number of cups = 64 + 48 = 112 cups

* You have 112 cups of beverage

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3 years ago

Choose the best description of a tessellation.

jok3333 [9.3K]

Answer:

I think number 4 I'm not sure

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3 years ago

Read 2 more answers

A toy company had an order of five boxes to ship unfortunately this was 17 pounds over the shipping weight limit per order of ea

pochemuha

Answer:

28 pounds

Step-by-step explanation:

We have a total of 5 boxes, now we know that each box weighs 9 pounds, therefore:

Total weight = 5 * 9 = 45 pounds

Which means there are 45 pounds in total.

We are told that the limit is exceeded by 17 pounds. To find the limit weight, it is necessary to subtract the total weight and the excess:

45-17 = 28 pounds

Therefore, the maximum weight allowed per shipment is 28 pounds.

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3 years ago

An 18% alcohol solution is mixed with a 45% alcohol solution to produce 12 ounces of a 36% alcohol solution. How many ounces of

Leno4ka [110]

Answer:

The ounces of the 18% solution is 4 and the ounces of the 45% solution is 8

Step-by-step explanation:

Let

x ---> ounces of the 18% solution

y ---> ounces of the 45% solution

we know that

The number of ounces of the 18% solution plus the number of ounces of the 45% solution must be equal to 12 ounces

$x+y=12$ ----> equation A

The number of ounces of the 18% solution multiplied by 0.18 (percentage in decimal form) plus the number of ounces of the 45% solution multiplied by 0.45 (percentage in decimal form), must be equal to 12 ounces multiplied by 0.36 (percentage in decimal form)

$0.18x+0.45y=0.36(12)$

$0.18x+0.45y=4.32$ -----> equation B

Solve the system of equations by graphing

Remember that the solution of the system is the intersection point both graphs

using a graphing tool

The solution is the point (4,8)

see the attached figure

therefore

The ounces of the 18% solution is 4 and the ounces of the 45% solution is 8

6 0

3 years ago