Solve for x: 7x = 63
2 answers:
Answer: x = 9
Step-by-step explanation: To solve for <em>x</em> in this equation, we want to get <em>x </em>by itself on the left side of the equation.
Since <em>x</em> is being multiplied by 7, to get <em>x</em> by itself, we need to divide by 7 on the left side of the equation. Since we divided by 7 on the left side, we must also divide by 7 on the right side. On the left side, notice that the 7's cancel out so we're simply left with <em>x</em>. On the right side we have 63 divided by 7 which is 9 so we have <em>x = 9</em>.
Finally, remember to check your answer by substituting a 9 back into the original equation. So we have 7(9) = 63 which is a true statement.
So our answer, x = 9, is correct.
I have attached my work in the image below.
You might be interested in
Answer:
The correct option is;
∠ADB ≅ ∠CDB, ≅
and
≅
. So ΔABD ≅ ΔCDB by SAS
Step-by-step explanation:
The given parameters are;
The polygon given = Quadrilateral
The diagonal of the quadrilateral = BD
The length of the side AD = (2×y + 5) units
The length of the side CD = (y + 10) units
The given measure of ∠ABD = (2 × y + 25)°
The given measure of ∠CBD = 35°
When y = 5, we have by substituting the value of y into the equations representing the dimensions of the quadrilateral ABCD;
The length of the side AD = 2 × y + 5 = 2×5 + 5 = 15 units
∴ The length of the side AD = 15 units
The length of the side CD = (y + 10) units = (5 + 10) units = 15 units
∴ The length of the side CD = 15 units
The measure of ∠ABD = (2 × y + 25)° = (2 × 5 + 25)° = 35°
The measure of ∠ABD = 35°
Therefore;
∠ADB ≅ ∠CDB by substitution
≅
by reflexive property
≅
by substitution
∴ ΔABD ≅ ΔCBD by Side-Angle-Side rule of congruency
Answer: 0
Step-by-step explanation:
To find slope, I found that an easy way is the equation y2 - y1 over (divided by) x2 - x1
so for this, it would be:
which is 0/7
0 divided by 7 is 0, so there is your answer