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ipn [44]
3 years ago
9

Help me please! I’m begging

Mathematics
1 answer:
Goryan [66]3 years ago
7 0

12) the radius is 15 so with the equation (3.14)*r^2, we get (3.14)(15^2)=706.5

13) true, true (if x=4), true

14) y=0.75x+4.50, $8.25

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A number is divided by 5, then added to 18. The answer is 9 less than 62. What is the original number?
Scorpion4ik [409]

Answer: The original number is 175

Step-by-step explanation:

The number will be represent by x .

The number is being divided by 5  so we can represent by the expression x/5.

After than is being added to 18  so we will add 18 to the expression.

x/5 + 18 .

It has to equal to 9 less than 62 and 9 less than 62 is the same as the expression  62 -9.

Whole equation will be   x/5 + 18 = 62 - 9  

\frac{x}{5} + 18 = 62 - 9     Combine like terms on the right side

x/5 + 18 = 53        Subtract 18 from both sides

      -18     -18

x/5 = 35     Multiply both side by 5.

x = 175

This means the original number is 175.

4 0
3 years ago
The data table represents the distance between a well-known lighthouse and a cruise ship over time. The cruise ship is travellin
Trava [24]
Find the velocity first, the "slope".

m=(y2-y1)/(x2-x1)

m=(95.5-53)/(4-2)

m=21.25  ?  Your equations are wrong, I'll double check with another set of points...

m=(350.5-308)/(16-14)

m=21.25  LOL, yep none of your lines has the correct slope.

Anyway...

y=21.25x+b, using any point we can solve for the y-intercept, or "b", (2, 53)

53=21.25(2)+b

53=42.5+b

10.5=b so the distance to the lighthouse as a function of time is:

y=21.25x+10.5

So essentially, you should fire your teacher or burn that book you are using :)

6 0
4 years ago
Read 2 more answers
Which point is located at (–1, 3)? On a coordinate plane, point A is 1 unit to the right and 3 units down. Point B is 3 units to
Marizza181 [45]

Answer:

Point C.

Step-by-step explanation:

When the x-value is negative, the point is moving left. In this case, the point is moving left 1.

When the y-value is positive, the point is moving up. In this case, the point is moving up 3.

Only Point C fits the description.

4 0
3 years ago
X+2=y-4 solve equation for y
lesya692 [45]

Answer:

x=y−6

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
What is 1023x102+112-5=
kiruha [24]

Answer:

The answer is 104,453.

Step-by-step explanation:

Multiply 1,023 and 102 first because you always have to do your problems left to right in math. Your equation should now look like 104,346 + 112 - 5. Calculate the sum of the positive numbers by adding 104, 346 + 112. Your equation should now be 104,458 - 5. Then lastly, you subtract the numbers 104,458 and 5, and you should get 104, 453 as your answer.

7 0
3 years ago
Read 2 more answers
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