Answer:
the answer is B
x = 1
Step-by-step explanation:
the symmetry is in the middle of the curve like a mirror and the equation of the mirror or symmetry line is x=1
If your asking for the length of the third side, to find it first we have to build an equation.
let's take x as the length of the two sides with the same length.
so your equation should be,
x+x+2x-7=44cm
=4x-7=44cm
+7 +7
=4x=51cm
÷4 ÷4
=x=12.75cm
length of the sides with equal length= 12.75cm
length of the 3rd side= 12.75×2-7=18.5cm
check,
12.75cm+12.75cm+18.5cm=44cm
hope this helps.....
Answer:
A
Step-by-step explanation:
The opposite of a number is simply the number multiplied by -1 so the opposite of n is -n. "Between -3 and 0" tells us that the inequality is -3 < -n < 0.
Answer: For the sum of 130
First: $90
Second: $40
Step-by-step explanation:
We write equations for each part of this situation.
<u>The Total Charge</u>
Together they charged 1550. This means 1550 is made up of the first mechanics rate for 15 hours and the second's rate for 5 hours. Lets call the first's rate a, so he charges 15a. The second's let's call b. He charges 5b. We add them together 15a+5b=1550.
<u>The Sum of the Rates</u>
Since the first's rate is a and the second is b, we can write a+b=130 since their sum is 130.
We solve for a and b by substituting one equation into another. Solve for the variable. Then substitute the value into the equation to find the other variable.
For a+b=130, rearrange to b=130-a and substitute into 15a+5b=1550.
15a + 5 (130-a)=1550
15a+650-5a=1550
10a+650-650=1550-650
10a=900
a=$90 was charged by the first mechanic.
We substitute to find the second mechanic's rate.
90+b=130
90-90+b=130-90
b= $40 was charged by the second mechanic
The answer is -9.6. Hope that helps