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Vinil7 [7]
3 years ago
13

The temperature is dropping at a rate of 2 1/2 degrees each hour for 4 1/4 hours how much did the temperature change?

Mathematics
1 answer:
ella [17]3 years ago
3 0

Answer:

-10.625°C

Step-by-step explanation:

-2.5 each hour

4.25hours in total

-2.5*4.25= -10.625

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A team of engineers is building a very fast car. The goal is for the car to have a
lapo4ka [179]

Answer:

The car will be able to travel 2,000 miles in 2 hours

Step-by-step explanation:

The rule of the distance is D = v × t, where

  • v is the speed
  • t is the time

∵ The car has a top speed of 1,000 miles each hour

∴ v = 1,000 miles/hour

∵ The car will travel for 2 hours

∴ t = 2 hours

→ By using the rule of the distance

∵ D = v × t

→ Substitute the values of v and t in the rule to find D

∴ D = 1,000 × 2

∴ D = 2,000 miles

∴ The car will be able to travel 2,000 miles in 2 hours

3 0
3 years ago
X - 3 over 4 = 7 how much does x equal
ddd [48]

Answer:

x=31

Step-by-step explanation:

set it up like an equation

x-3/4=7

so first if all multipy 4 times 7 because thats the inverse opperation of divsion

x-3/4=7

    *4   *4

x-3=28

now add three to each side

x-3=28

 +3   +3

x=31

3 0
3 years ago
a chef uses 4 3/4 cups of broth for 10 servings of soup.how much broth is is one serving . let x represent amount. 4 3/4/10 =x/1
enyata [817]
Let's firstly convert the mixed fraction to "improper" and then proceed,

\bf \begin{array}{ccll}
\stackrel{broth}{cups}&servings\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
4\frac{3}{4}&10\\\\
x&1
\end{array}\implies \cfrac{\quad \stackrel{mixed}{4\frac{3}{4}}\quad }{x}=\cfrac{10}{1}\implies \cfrac{\quad \frac{4\cdot 4+3}{4}\quad }{x}=\cfrac{10}{1}

\bf \cfrac{\quad \stackrel{improper}{\frac{19}{4}}\quad }{x}=\cfrac{10}{1}\implies \cfrac{\quad \frac{19}{4}\quad }{\frac{x}{1}}=\cfrac{10}{1}\implies \cfrac{19}{4}\cdot \cfrac{1}{x}=\cfrac{10}{1}\implies \cfrac{19}{4x}=\cfrac{10}{1}
\\\\\\
19=40x\implies \cfrac{19}{40}=x
6 0
4 years ago
Write a fraction setting the vertical length of the larger triangle over its horizontal length. What does this fraction represen
Harman [31]

Answer:

Ratio = \frac{2}{3}

Step-by-step explanation:

Given

See attachment

Required

Vertical length / Horizontal length

From the attachment, we have:

y = 4\ units --- the vertical length of the larger triangle

and

x = 6\ units --- the horizontal length of the larger triangle

So, the ratio is:

Ratio = \frac{y}{x}

Ratio = \frac{4\ units}{6\ units}

Ratio = \frac{4}{6}

Divide by 2

Ratio = \frac{2}{3}

4 0
3 years ago
The probability of a chance event is 0.05, it is
tekilochka [14]

Answer:

less

Step-by-step explanation:

3 0
3 years ago
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