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Margaret [11]
3 years ago
7

Find the value of d such that the system of equations

Mathematics
1 answer:
vova2212 [387]3 years ago
4 0

Answer:

18x okkklllkkkkkkkkkkkkkkkkkkkkkkkkkkmmm

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The average speed of Car 1 = 45 mph.
oee [108]

Answer:

\boxed{\text{0.675 h}}

Step-by-step explanation:

18 min = 0.3 h

Car 1 started 0.3 h before Car 2.

  Let t = time of Car 2. Then

t + 0.3 = time of Car 1

Distance = speed × time, and both cars travel the same distance. Then

\begin{array}{rcl}45(t + 0.3) & = & 65t\\45t + 13.5 & = & 65t\\20t & = & 13.5\\t & = & \textbf{0.675 h}\\\end{array}\\\text{Car will overtake Car 1 in } \boxed{\textbf{0.675 h}}

Check:

\begin{array}{rcl}45(0.675 + 0.3) & = & 65 \times 0.675\\45 \times 0.975 & = & 43.875\\43.875 & = & 43.875\\\end{array}

OK.

7 0
2 years ago
Read 2 more answers
What is the value of x if the perimeter of both shapes is the same?
AveGali [126]

The value of x is: \frac{4}{3}

<u><em>Recall</em></u>:

Perimeter of a shape is the sum of all its sides

<em>Thus</em>:

Perimeter of the triangle = x + x +x+ 4 = 3x + 4

Perimeter of the rectangle = 2(2x) + 2(x) = 4x + 2x = 6x

We are told that the perimeter of both shapes are equal. Set both perimeters equal and solve for x.

3x + 4 = 6x

<em>Add like terms</em>

<em />4 = 6x - 3x\\4 = 3x

<em>Divide both sides by 3</em>

<em />\frac{4}{3} = x\\x = \frac{4}{3}

The value of x = \frac{4}{3}

Learn more here:

brainly.com/question/20562416

3 0
2 years ago
PLEASE HELP I WILL MARK YOU BRAINLIEST. Ms. Simmons is using sticky notes to write reminders to herself. Each sticky note is 5/6
Masja [62]

Answer:

5 square inches

Step-by-step explanation:

First, we need to find the area of one sticky note:

The formula is Lenth*Width

Area of one sticky note:

5/6*2/3=10/18

=5/9 square inches

Now, we find the area of 9 sticky notes:

5/9*9=5

5 square inches

Hope this helps! Have an amazing day!

7 0
3 years ago
4- 4 x7+3= right the answer is -21, someone told me the answer is 10
sattari [20]
Yeah that’s the right answer
3 0
3 years ago
Read 2 more answers
What shape will you get if you put 3 diamonds together
8_murik_8 [283]

I think just a trapezoid no others

Hope I helped, Good luck

 = )

4 0
3 years ago
Read 2 more answers
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