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3 years ago

After substituting, what is the first step when evaluating 4y+9/7 when y=8

1 answer:

4 0

Hello!

In terms of Order of Operations, you would multiply 8 and 4 as it is the first multiplication or division step in the problem.

The answer is B) multiply 8 by 4

Hope this helps!

You might be interested in

sladkih [1.3K]

Answer: $\angle WXY=125^{\circ}$

Explanation: Since, a kite has one pair of congruent angles and its main diagonal bisects its opposite angles.

Therefore, According to the given figure,

$\angle WXY=\angle WZY$

And, WY is the main diagonal which bisects angles ZWX and XYZ.

So, $\angle ZWX =2\times \angle ZWY= 2\times 43^{\circ}=86^{\circ}$

And, $\angle XYZ =2\times \angle XYW= 2\times 12^{\circ}=24^{\circ}$

Since, Sum of all angles of a quadrilateral is equal to $360^{\circ}$

Therefore, $\angle WXY+\angle WZY+\angle XYZ+\angle ZWX=360^{\circ}$

⇒ $2\times \angle WXY+ 86^{\circ}+24^{\circ}=360^{\circ}$

⇒ $2\times \angle WXY=360^{\circ}-110^{\circ}=250{\circ}$

⇒ $\angle WXY=125^{\circ}$

7 0

3 years ago

What are the x- and y-intercepts of 2x+4y=8

NeX [460]

x-intercept: (4,0)

y-intercept: (0,2)

8 0

3 years ago

Alex’s lunch at a restaurant costs $13.00, without tax. He leaves the waiter a tip of 17% of the cost of the lunch, without tax.

motikmotik

Answer:

$15.21

Step-by-step explanation:

The total cost will be the cost of the meal plus the tip.

The tip is 17% of the meal's price. Multiply 13 by 0.17, and you will have $2.21 as the tip.

$13 + $2.21 = $15.21

6 0

4 years ago

Micah places a mirror on the ground 24 feet from the base of a tree. He walks

irina [24]

The height of tree is 8 feet

<h3><u>Solution:</u></h3>

Given, Micah places a mirror on the ground 24 feet from the base of a tree

At that point, Micah's eyes are 6 feet above the ground

And he is 9 feet from the image in the mirror.

To find : height of tree = ?

Let "n" be the height of tree

From the question, we can see there is a directly proportional relationship between heights and distances.

Proportional relationships are relationships between two variables where their ratios are equivalent.

$\frac{\text { height of micah eyes above ground }}{\text { distance of micah from mirror }}=\frac{\text { height of tree above the ground }}{\text { distance of tree from mirror }}$

$\begin{array}{l}{\frac{6 \text { feet }}{9 \text { feet }}=\frac{n \text { feet }}{24 \text { feet }}} \\\\ {\frac{6}{9}=\frac{n}{24}} \\\\ {\text { n }=\frac{1}{3} \times 24} \\\\ {\text { n }=8}\end{array}$

Hence, the height of the tree is 8 feet

6 0

3 years ago

two dice are rolled in succession. determine the probability that their sum is 10 or more,given that the first die is a 5

MrRa [10]

If the first die is a 5, the second must be 5 or more in order to have a sum of at least ten.

Assuming it is a six sided die, the two values that would make this true are 5 and 6.

2 values/6 possible would be a probability of 2/6, which simplifies to 1/3

Final answer: 1/3

3 0

4 years ago