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3 years ago

Solve the quadratic equations

Mathematics

1 answer:

Natali5045456 [20]3 years ago

3 0

A20-3a+2=0

22-3a=0

-3a=-22

a=22/3

A= 7,3

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Omar is making pizzas for his whole family. so far, he has made 5.04 pounds worth of pizzas and has 7 people to feed. how much p

makvit [3.9K]

They'll all get 0.72 pounds
5.04 ÷ 7 = 0.72

7 0

3 years ago

H(t)=(t+3)^2+5

sineoko [7]

Answer:

Option C. −4≤t≤−3

Step-by-step explanation:

we have

$H(t)=(t+3)^2+5$

This is the equation of a vertical parabola written in vertex form

The parabola open upward (the leading coefficient is positive)

The vertex is a minimum

The vertex is the point (-3,5)

The function is increasing in the interval [-3,∞)

The function is decreasing in the interval (-∞,-3]

The function will have a negative average rate when the function will be decreasing

therefore

the answer is option C

7 0

3 years ago

If a cube with the length of the side of 4 cm is cut into smaller cubes with the length of the side of 1 cm, then what is the pe

ValentinkaMS [17]

Answer:

300 %

Step-by-step explanation:

Length of the larger cube =4 cm

So volume $V=side^3=4^3=64cm^3$

Length of the smaller cube = 1 cm

Volume of the smaller cube $V=side^3=1^3=1cm^3$

So total number of smaller cube $=\frac{64}{1}=64$

Surface area of the larger cube $A=6\times side^2=6\times 4^2=144cm^2$

Surface area of the 64 smaller cube $A=64\times 6\times side^2=64\times 6\times 1^2=384cm^2$

So percentage increase in surface area $=\frac{384-96}{96}\times 100=300$ %

6 0

3 years ago

Estimate the product of 126.12 and 2.2.

kifflom [539]

Product means the answer/result to a multiplication problem

Estimate means to form an approximation/ rough guess

126.12 x 2.2 = 277.464

This answer, 277.464, is the exact product

Its wanting us to find the estimate (there could be possible estimates, depending on what the instructions is asking for):

- 277
- 280
- 300

6 0

4 years ago

8x - 3(5 + 9x what's the simplified algebraic expression p

Mashcka [7]

=8x + (-3) (5) + (-3) (9x)

=8x + -15 + -27x

(8x + -27x) + (-15)

19x +-15

19x -15

4 0

3 years ago