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DIA [1.3K]
3 years ago
7

True or False?

Mathematics
1 answer:
frozen [14]3 years ago
7 0
I think it is false
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F(x) = -3x – 2<br> g(x) = 2x + 5<br> Find (f*g)(5)
antiseptic1488 [7]

Answer:

hope it will help u in understanding

3 0
3 years ago
Please HELP!!! I'll make you Brainliest!!!!
erica [24]

Answer: 1. d. 7x\geq 350; x\geq 50

2. a. (5, 28)

3. a: C(n) = 0.90 n - 0.40

Step-by-step explanation:

1. Here x represents the saving of one day.

Thus, the total saving for 7 day = 7 x

And, my  goal is to save at least $350.00  ( According to the question)

⇒ 7x\geq 350

⇒  x\geq 50 ( by dividing both sides by 7 )

Therefore, Option d is correct.

2. since, if a point satisfies an equation then we can say that it is the solution of the equation.

(5,28) satisfies y= 5x + 3

Because at x = 5, 5×5 + 3 = 25 + 3 = 28

except this point other points (28, 5), (4, 20) and (3, 19) are not satisfying given equation of line.

Therefore, only (5,28) is the solution of line.

⇒ Option a is correct.

3. Here n represents the number of tunas.

And, according to question the cost of one tuna = $0.90

⇒ Cost of n tunas = $ 0.90n

But again according to the question,

I have a coupon for $0.40 off your total purchase.

Thus, $ 0.40 will be less from my total purchasing cost.

⇒ The cost of n tunas = $ (0.90 n - 0.4)

Option a is correct.



7 0
3 years ago
Cube-shaped blocks are packed into a cube-shaped storage container. ​ The edge length of the storage container is 212 feet. The
igor_vitrenko [27]

Answer:

The volume of cube-shaped block is 0.125 cubic feet.

Step-by-step explanation:

We are given the following in the question:

Edge length of storage container =

2\dfrac{1}{2}\text{ feet}

Edge length of block =

\dfrac{1}{5}\times \text{Edge length of container}

Putting value we get,

Edge length of block =

\dfrac{1}{5}\times 2\dfrac{1}{2}\\\\=\dfrac{1}{5}\times \dfrac{5}{2}\\\\=\dfrac{1}{2}\text{ feet}

Volume of cube-shaped block = Volume of cube

V = \text{(Edge)}^3\\\\V =(\dfrac{1}{2})^3\\\\V = \dfrac{1}{8}\text{ cubic feet}\\\\V = 0.125\text{ cubic feet}

Thus, the volume of cube-shaped block is 0.125 cubic feet.

7 0
3 years ago
-2.73 as a mixed number
Mademuasel [1]
Answer: -2 73/100

Explanation: keep the -2 and just look at the .73. The .73 is in the hundredths place so you put it over 100.
3 0
2 years ago
Read 2 more answers
PLEASE ANSWER CORRECTLY, I WILL GIVE BRAINLIEST &lt;3 THANKS IN ADVANCE.
lilavasa [31]

Answer:

B = 40° and D = 60°

Step-by-step explanation:

Just subtract the angles you already know from 90° (since perpendicular means right angle, which is 90°).

4 0
3 years ago
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