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ser-zykov [4K]
2 years ago
13

When ms Thelma turned one her oven ,the temperateure inside was 70 degress. The temputure began to rised at a rate of 40 per min

ute . How long did it take for the oven to reach 350
Mathematics
1 answer:
Ronch [10]2 years ago
3 0

Answer:

7 minutes

Step-by-step explanation:

First, subtract 70 from 350.

350-70=280

Now, divide 280 by 40

280/40=7

It took Ms. Thelmas oven to heat up from 70 degrees to 350 degrees in 7 minutes.

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Which r–value represents the strongest negative correlation?<br><br> –0.7<br> –0.22<br> 0.38<br> 0.9
inn [45]

Answer:

Option A is correct.

The value of r = -0.7 represents the strongest negative correlation.

Step-by-step explanation:

A correlation is a  value that describes a relationship between two things  or variables.

Strongest Negative Correlation says that closer a negative correlation to -1, the stronger the relationship between the two variables.

From the options,  we have only two negative values i.e, r= -0.7 and r= -0.22.

We have to find the strongest negative correlation r-value.

By the definition, you can see that -0.7 is very closer to -1 ,

therefore, the  value of r = -0.7 represents the strongest negative correlation.


3 0
3 years ago
Read 2 more answers
Can someone please help me?
madreJ [45]

as the horizontal beam are parallel to each other x and 40 are alternate angles and alternate angles are equal. So <u>x=40</u>

8 0
2 years ago
Read 2 more answers
Find the area of a compound shape<br><br> The answer is 357 m^2<br><br> I just need the steps.....
Veseljchak [2.6K]

9514 1404 393

Answer:

  • figure the areas of the rectangle and semicircle
  • add them together

Step-by-step explanation:

The area of the rectangle is given by ...

  A = LW

  A = (20 m)(14 m) = 280 m²

__

The area of the semicircle is ...

  A = (1/2)πr²

  A = (1/2)π(7 m)² = 24.5π m² ≈ 77 m²

__

Then the total area is ...

  280 m² +77 m² = 357 m²

_____

The width of the rectangle is the diameter of the circle, which is twice its radius. The area of a semicircle is 1/2 the area of a circle.

5 0
2 years ago
= Homework: Section 9.6
MA_775_DIABLO [31]

Answer:

here is an an example

Step-by-step explanation:

Let x = the width of the rectangle

P = 2l + 2w

2(40) + 2x ≤ 150

80 + 2x ≤ 150

2x ≤ 70

x ≤ 35 cm

7 0
2 years ago
You withdrew $36.25 from your checking account. Now your balance is -$14.75. Write and solve an equation to find the amount of m
iVinArrow [24]
Total was x
subtract 36.25 amount of money and you have -14.75 left

You can write this 
x - 36.25 = -14.75
add 36.25 to both sides
x = -14.75 + 36.25
Solve by combining like terms
x = 21.5

You had $21.5 on your account before you withdrew $36.25 and had a balance of -$14.75 left.

Hope this helps!

8 0
3 years ago
Read 2 more answers
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