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Leno4ka [110]
3 years ago
9

In a local city, the temperature at noon is Negative 3 degrees Celsius. The temperature is expected to decrease by 2.5 degrees C

elsius each hour until the temperature reaches Negative 18 degrees Celsius. How many hours will it take for the temperature to reach Negative 18 degrees Celsius?
Mathematics
2 answers:
Tresset [83]3 years ago
7 0

Answer:

6

Step-by-step explanation:

18-3 = 15. 15 divided by 2.5 is 6. Hope this helps!

wlad13 [49]3 years ago
6 0

Answer: 6 your welcome❤️

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If John is 6 and his brother is 2 times his age how old is his brother
tangare [24]

Answer:

Hey!

Your answer is that John's brother is 12 years old!

Step-by-step explanation:

If in the question it says "2 times" you just multiply the subject by 2

In this case it is 6 x 2 = 12

So his brother is 12 years of age!

HOPE THIS HELPS!!

8 0
3 years ago
How many plastic cubes can fit into the box?
netineya [11]

Option D:

160 plastic cubes can fit into the box.

Solution:

Convert mixed fraction into improper fraction.

Length of the box = 4 ft

Width of the box = 2\frac{1}{2}=\frac{5}{2} ft

Height of the box = 2 ft

Volume of the box = length × width × height

                                 $=4\times\frac{5}{2} \times2

                                 = 20 ft³

Volume of the box = 20 ft³

Length of the plastic cube = \frac{1}{2} ft

Volume of the cube = length × length × length

                                 $=\frac{1}{2} \times\frac{1}{2} \times\frac{1}{2}

                                 $=\frac{1}{8} \ \text{ft}^3

Volume of the cube = 0.125 ft³

$\text{Number of plastic cubes}=\frac{\text{Volume of box}}{\text{Volume of cube}}      

                                        $=\frac{20}{0.125}

                                        = 160

Number of plastic cubes = 160

Hence 160 plastic cubes can fit into the box.

Option D is the correct answer.

7 0
3 years ago
If DM = 35, what is the value of r?
Gennadij [26K]

Answer:

r = 11

Step-by-step explanation:

Given

DM = 35

DG = r + 5

GM = 3r - 14

Required

Find r

From the question, we understand that G is a point between D and M:

This implies that:

DM = DG + GM

Substitute values for DM, DG and GM

35 = r + 5 + 3r - 14

Collect Like Terms

r + 3r = 35 - 5 + 14

4r = 44

Solve for r

r = 44/4

r = 11

3 0
4 years ago
During the summer months the water level in Marta's pool decreases by about 1/2 inch each day due to evaporation. Which equation
larisa86 [58]

Answer:

Change = -(1/2) * 30 = -15 inches

Step-by-step explanation:

If the water level decreases by 1/2 inch each day, the change in the water level in one day is -1/2 inch.

So, after t days, the total change in the water level can be calculated as:

Total change = -(1/2) * t inches

So, after 30 summer days, the total change is:

Change = -(1/2) * 30 = -15 inches

So the water level of the pool after 30 summer days has decreased by 15 inches.

8 0
4 years ago
Read 2 more answers
Find the slope of the line that passes<br> through these two points.<br> Point 1(3,5) Point 2(4,2)
Helen [10]

Answer:

Slope  = -3

Step-by-step explanation:

(3 , 5)   ; (4, 2)

Slope=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}\\\\=\frac{2-5}{4-3}\\\\=\frac{-3}{1}\\\\=-3

4 0
3 years ago
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