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Finger [1]
4 years ago
9

Jessica increases the temperature of a block of ice by 20º. Which integer represents the amount by which Jessica must change the

temperature for the block of ice to return to its starting temperature? A. –40 B. –20 C. 20 D. 40
Mathematics
2 answers:
ivolga24 [154]4 years ago
5 0

Answer:

b

Step-by-step explanation:

horrorfan [7]4 years ago
4 0

Answer:

B. -20

Step-by-step explanation:

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HELPPPPPPPPP PLZZZZZZZZZZZZZZ
tresset_1 [31]

Answer:

the 3rd one

Step-by-step explanation:

an open circle means equal to and x is equal to or greater than and the line is going past 9

4 0
3 years ago
Read 2 more answers
8 identical pens cost £12 work out the cost of 10 of these pens
katen-ka-za [31]

Ok. So, if 8 pens cost £12. Then we would divide £12 by 8. Each pen costs £1.5.

So now we are going to multiply £1.5 and 10. £1.5*10=15.

The total of 10 pens is £15.

I hope this helps, if you need any additional help, just ask. I am here to help you as needed.

3 0
3 years ago
Choose the correct graph to fit the equation 3y=2x+3​
Katyanochek1 [597]

Answer:

y = 2/3x + 1    

Step-by-step explanation:

<u>3y = 2x + 3 </u>           Divide all by 3

3       3      3

y = 2/3x + 1           Slope is 2/3

3 0
3 years ago
Read 2 more answers
Water is leaking out of a tank at a steady rate the tank started with 75 gallons after 15 hours the tank has 33 gallons of water
Natasha_Volkova [10]

Answer:

The equation will be "y=-2.8 x+75".

Step-by-step explanation:

The given values are:

Started with,

= 75 gallons

After 15 hrs,

Tank has,

= 33 gallons

Now,

The slope will be:

=  \frac{33-75}{15}

=  \frac{-42}{15}

=  -2.8

Thus,

The equation is "y=-2.5x+75".

5 0
3 years ago
Could 7.7 cm , 4.0 cm , 7.7 cm,4.0 cm,7, point, 7, start text, space, c, m, end text, comma, 4, point, 0, start text, space, c,
Lyrx [107]

Answer:

With given side lengths a triangle <u>could not</u> be created.

Step-by-step explanation:

Given:

First side length = 7.7 cm

Second side length = 4.0 cm

Third side length = 1.7 cm

We need find whether this could be the side length of the triangle.

Solution:

Now we know that;

By Triangle In equality property which states that;

"Sum of the two side length of the triangle must be greater than third side."

It should fulfill all three conditions;

So we will find the same.

Condition 1:

First Side + Second Side > Third side

7.7+4.0>1.7\\\\11.7>1.7

Hence This condition is true.

Condition 2:

Second side + Third Side > First side

4.0+1.7>7.7\\\\5.7>7.7

Hence This condition is False.

Condition 3:

First side + Third Side > Second side

7.7+1.7>4.0\\\\9.4>4.0

Hence This condition is true.

Since One of the condition is false hence With given side lengths a triangle could not be created.

8 0
3 years ago
Read 2 more answers
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