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Galina-37 [17]
3 years ago
11

Help me plz only 3 questions and answer all 3 of them

Mathematics
1 answer:
a_sh-v [17]3 years ago
7 0
Ok so this is the first page
1.
78 pizzas. 20% of 65 is 13. Add that to 65 and you get 78 pizzas.
It is a 1.08% decrease. When you divide 65/60 you get 1.08. Im not 100% sure about this one

2.
Online store=$208 and the superstore=$224
The difference is $16 so it would be cheaper to get it at the online store

3.
It is $4000. For the first year you would multiply $20,000 by 5% which is 20000*.05=1000. Then multiply 1000 by 4 years to get $4,000
Instead of multiplying the 1000 by 4, multiply by 2 to get 2000. Subtract 4000-2000 to get 2000. You saved $2,000 

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Find the sum of -822 + 3 and -92? + 3x – 3.
erik [133]

Answer:

<h3>The sum of -822 + 3 and -92 is - 911</h3>

Step-by-step explanation:

= (-822 + 3) + (-92)

= ( -819) + (-92)

= -911

HOPE THIS HELPS YOU

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8 0
3 years ago
A student has learned that test scores in math are determined by this quadratic function: s(t) = -(t-6)^2 + 99
ser-zykov [4K]

Answer:

a. 6,  b. 99, c. 63

Step-by-step explanation:

A)  The function s(t) is in the vertex form. The standard vertex form is a(x-h)+k where the vertex is (h,k). The vertex is the highest (or lowest in some cases) point of the graph, so if we use s(t) to get the vertex we get that h=6 and k=99. This means that for a student to get a perfect score they need to study 6 hours

B) We can just take the k value from the first question because that's the highest value for s(t), so the highest score will be 99

C) For this one just plug in 0 for time, so -(0-6)^2+99. This equals -(-6)^2+99, which equals 99-36 =63

4 0
3 years ago
How do I solve this -1/2x-7=-11
tankabanditka [31]

Answer:

Step-by-step explanation:

-1/2x -7=-11

-1/2x +4=0

4=1/2x

x=8

7 0
2 years ago
Read 2 more answers
The density of a certain material is such that it weighs 6 pounds per pint of volume.
ella [17]

Answer:

Density = 5751.66 gram per litre

Step-by-step explanation:

It is given that the density of a certain material 6 pounds per pint.

The conversion from pint to liter is as follows :

1 pint = 0.473 litre

The conversion from pounds to kg is as follows :

1 pound = 453.59 kg

We need to express the density from pounds per pint to grams per liter.

1 pound per pint = 958.611 gram per litre

So,

6 pound per pint = 958.611 × 6 gram per litre

6 pound per pint  = 5751.66 gram per litre

3 0
2 years ago
What is (−8 3/4)÷2 1/6?
docker41 [41]

Answer:

-4.03846153846

Step-by-step explanation:

done

5 0
2 years ago
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