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pickupchik [31]
3 years ago
11

NEED HELP!!!!!! Please thank you

Mathematics
1 answer:
chubhunter [2.5K]3 years ago
7 0

Answer:

1. 39 km/hr

2. $235

3. 16

4. 7m+3 inches

Step-by-step explanation:

1. Original speed of car: x km

x+21=60

x=39

original speed: 39 km/hr

2. Amount that the freshman class raised: x

2x+85=555

2x=555-85=470

x=235

Amount that the freshman class raised: $235

3. Number: x

5x-9=71

5x=71+9=80

x=16

The number: 16

4.

3m+5+4m-2

= 3m+4m+5-2

=7m+3 inches

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5 less than a number is equivalent to 1 more than three times the number
kifflom [539]

Answer:

x-5=3x+1 (x=-3)

Step-by-step explanation:

5 less (_-5)

than a number (x)

is equivalent to (=)

1 more than (+1)

than three times the number (3x)

combine them all to get x-5=3x+1

extra:

add 5 to each side x=3x+6

subtract x from each side 0=2x+6

subtract 6 from each side -6=2x

divide each side by 2 -3=x

6 0
3 years ago
If f(x) = 2x + 3 for all values of x, what is the value of f(-3)? A 0 B -3 C 5 D 9
frez [133]

Answer:

f(-3)=-3

Step-by-step explanation:

f(x)=2x+3

f(-3)=2(-3)+3

f(-3)=-6+3

f(-3)=-3

Hope this helps!

(Please mark Brainliest!)

7 0
4 years ago
Read 2 more answers
On a number line 8.29 would be located..... choose all answers that make the statement true
Gala2k [10]
A, B, and D I believe:)
5 0
3 years ago
Read 2 more answers
12+ brainliest pppllleeeaaassee
Veronika [31]
The answer would be wx(yz) because the associative property says that you can change where the parenthesis are while keeping the same equation.
The equation is w(xy)z, but moving the parenthesis some where else will not change it, such as wx(yz).
3 0
3 years ago
Write an equation of the line that passes through (4,−1) and is parallel to the line y=3x+7. (hint: NOT y=3x-13)
CaHeK987 [17]

To find the equation of the line, we are going to use the point-slope form, which is listed below:

(y - y_1) = m(x - x_1)

  • (x_1, y_1) is a point on the line
  • m is the slope of the line

You may notice that we have a point, but no slope is given to us. However, the problem states that the line is parallel to the equation y = 3x + 7, which means that it has the same slope as this line, which is 3. (Remember that this line is set up in y = mx + b form, where m is the slope)


Thus, we can now insert our values into the point-slope formula to find the equation of our line.

(y + 1) = 3(x - 4)

(y + 1) = 3x - 12

y = 3x - 13


The problem made it clear that it didn't want the form y = 3x - 13, so let's put it in standard form:

y = 3x - 13

3x - y = 13


The equation of our line is \boxed{3x - y = 13}.

8 0
3 years ago
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