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Georgia [21]
3 years ago
14

Please give the answer fast .I will mark you as brainliest.​

Mathematics
2 answers:
Ahat [919]3 years ago
5 0

Answer:

Your handwriting is really nice! Here is what I have so far:

Step-by-step explanation:

1. x + y

A: (2) + (4) = 6

2. (Don't remember how to do this one.)

3. 2x - 7

A: 2(-1) - 7 = -9

4. 7x^2 - 12x + 13

A: 7(16) - 12(4) + 13 = 112 - 48 + 13 = 77

5. -3p^2 + 4p + 7

A: -3(4) + 4(-2) + 7 = -12 -8 + 7 = -13

6. 3a -(a+2b)

A: 3(1) -([1] + 2[-1]) = 3 + (-1 + 2) = 3 + 1 = 4

7. (I can not see the value of Y.)

8. (I can't understand the equation. Please type it out for me in the comments.)

I need clarification for a few before I continue.

OleMash [197]3 years ago
4 0

Answer:

Step-by-step explanation:

x+y

2+4

6

m-7

9-7

2

2x-7

2(-1)-7

-1-7

-8

7x^2-12x+13

7(4)^2-12(4)+13

7(16)-48+13

112-48+13

77

-3p^2+4p+7

-3(-2)^2+4(-2)+7

-3(4)+(-8)+7

-12+-56

-68  

3a-(a+2b)

3(1)-(1+(-2))

3-(-2)

5

5x+2y-(x+y)

Answer: N/a

Value of y not available

5x+6y-32

5(1)+6(-1)

5+(-6)

-1

b^2-5a^3

-2^2-5(-4)^3

4-5(-64)

4-320

316

2a-b/c

Answer: N/A ]

Value of c not known

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Answer:nun ya buisness tho

Step-by-step explanation:

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3 years ago
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On a number line, point S has coordinate 4.8 and point T has coordinate –2.3.
Ilya [14]

Answer:

The only answer that would work would be D) | 4.8 - ( -2.3) |

Step-by-step explanation:

This is because the distance is the absolute value of the difference of the two numbers. B and C would also work, but the 2.3 is not negative. A does not work because it is addition.

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3 years ago
Arrange the following numbers in order from greatest to least 7,361; 7,136; 7,613
d1i1m1o1n [39]
7,613 ,7,361,7,136

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3 years ago
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17. Two tanks are similar in shape. The capacity of the tanks are 1,000,000 litres and 512, 000 liters respectively
Gnesinka [82]

Given that, Two tanks are similar in shape. The capacity of the tanks are 1,000,000 litres and 512, 000 liters respectively.Find the height of the smallest tank if the larger is 300cm tall?

Assume that, the tanks are rectangular in shapes and differ only on their heights. The volume of the larger tank is

V1 = l × w × h1 while the volume of the smaller tank is V2 = l ×w × h2. The ratios of the capacities is

\sf \frac{V1}{V2} = l  \times  w  \times h1  \times  w  \times  h2 =  \frac{h1}{h2}

Solving for the height of the smaller tank h2

\sf \frac{V1}{V2} =  \frac{h1}{h2}

\sf\frac{1000000} {51200} = \frac{ 300 cm }{ h2}

1000000 × h2 = 51200 × 300 cm

h2 = (51200 × 300 cm) /1000000

h2 = 15.36 cm

\sf\implies \: \boxed{ \bf{ \: Height \:  of  \: the \:  smaller  \: tank  \: is  \: 15.36 cm.\: }}

{ \underline {\rule{5000pt}{6pt}}}

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2 years ago
Read 2 more answers
Joe bikes at the speed of 30 km/h from his home toward his work. If Joe's wife leaves home 5 mins later by car, how fast should
Dahasolnce [82]

Answer:

45 mph

Step-by-step explanation:

This is a really good question to know the answer to. It is tricky and a bit indirect (which means you have to find something else before you can find the speed of the car.)

Let's keep track of what he does in the time allotted.

How far does Joe go in 5 minutes? That's the amount of time he's on the road before she is.

convert 5 minutes into hours. 5 minutes * 1 hour / 60 minutes = 1/12 of an hour

d = r*t

r = 30 km/hour

t = 1/12 hour

d = 30 km/hr * 1/12 hour = 2.5 km

Now she's about to start. She wants to catch him in 10 minutes

d = r*t

r = x mph

t = 10 minutes = 10 minutes * 1 hour * 60 minutes = 1/6 of an hour.

How far does he go in the 10 minute time?

d = 30 * 1/6 = 5 km

What is his total distance

5 km + 2.5 km = 7.5 km

Finally how fast does she need to go to catch him

d = 7.5 km

r = ?   This is what you are trying to find

t = 1/6 of an hour

d = r*t

7.5 km = r * (1/6)hour             divide by 1/6 hour

7.5 km // 1/6 hour = r

r = 7.5 * 6 = 45 mph

6 0
3 years ago
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