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3 years ago

11

Write the phase as an algebraic expression :4 times the sum of x and 3 anyone know how to do this?

2 answers:

Tanya [424]3 years ago

7 0

This expression can be written as 4(x+3) because you have to multiply the sum of x and 3 by 4.

Hope this helps

uranmaximum [27]3 years ago

5 0

4 (x+3)

Let's put this into parts.

(4 times) basically just means that you're multiplying 4 into something.

(The sum of x and 3) means that you're adding x and 3 together, because (and) means add.

(The sum) means the answer to that equation, so we would put x + 3 into parenthesis because we don't have the answer to x + 3 yet.

So, our answer would be: 4 (x+3)

~Hope I helped!~

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Jane spent 3 hours exploring a mountain with a dirt bike. First, she rode 48 miles uphill. After she reached the peak she rode f

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Answer: $25\ mph$

Step-by-step explanation:

Given

Jane took 3 hours

First she rode 48 miles with let say with $x$ mph

then she rode 15 miles with speed $(x+5)$ mph

Equate the time in each ride and equate it to total time

$\Rightarrow 3=\dfrac{48}{x}+\dfrac{15}{x+5}\\\\\Rightarrow 3x(x+5)=48(x+5)+15x\\\\\Rightarrow 3x^2+15x=48x+48\times 5+15x\\\\\Rightarrow 3x^2-48x-240=0\\\\\Rightarrow (x-20)(x+4)=0\\\\\text{Neglecting the negative value as speed cannot be negative}\\\\\Rightarrow x=20\ mph$

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3 years ago

What are transversals

AlexFokin [52]

Answer: In geometry, a transversal is a line that passes through two lines in the same plane at two distinct points.

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3 years ago

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How do i find the measure of R or whatever big confushion help

AfilCa [17]

Answer:

m∠R= 87°

Step-by-step explanation:

The angles in a polygon add up to (n-2)180

(5-2)180= 540°

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3 years ago

Cammie can mow 1/2 acre in 25 minutes. If her rate is constant, Cammie says she can mow 1 1/4 acres in one hour. Is Cammie corre

Sergeu [11.5K]

Answer: No, Cammie is not correct. She can mow $1\frac{1}{5}\ acres$ in one hour (See explanation).

Step-by-step explanation:

Convert the mixed number to an impoper fraction:

1. Multiply the whole number part by the denominator of the fraction and add the product to the numerator.

2. The denominator does not change.

Then:

$1\frac{1}{4}=\frac{(1*4)+1}{4}=\frac{5}{4}$

Let be "x" the acres Cammie can mow in one hour.

You know that she can mow $\frac{1}{2}\ acre$ in 25 minutes, then you can set up the following proportion (Remember that 1 hour has 60 minutes):

$\frac{\frac{1}{2}}{25}=\frac{x}{60}$

Solving for "x", you get:

$\frac{\frac{1}{2}}{25}=\frac{x}{60}\\\\(60)(\frac{1}{50})=x\\\\x=\frac{6}{5}$

Convert from improper fraction to mixed number:

1. When you divide 6 by 5, the quotient is 1. This will be the whole number part.

2. The remainder is 1. This will be the numerator.

3. The denominator does not change.

Then:

$x=1\frac{1}{5}$

Therefore, she can mow $1\frac{1}{5}\ acres$ in one hour.

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2 years ago

What is x? -10 - x = -4

Musya8 [376]

Answer:

x = -6

Step-by-step explanation:

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