Ask question

Ask question

All categories

pickupchik [31]

3 years ago

14

Write an equation for each problem. Then solve. Round to the nearest tenth if necessary.7. 40 is what percent of 145? Round to t

he nearest tenth if necessary.

1 answer:

Alexus [3.1K]3 years ago

6 0

Answer:

Step-by-step explanation:

You might be interested in

Brandon earns a rebate each month on his meals and movie tickets. He earns $0.50 for each movie ticket and $2 for each meal. Las

ElenaW [278]

This is the concept of simultaneous equations; We are required to create the equations modelling the above information.
Suppose the number of movie tickets was x and the number of meal tickets was y.
Therefore;
Total number of tickets was:
x+y=22
Total amount earned was:
0.5x+2y=25
The simultaneous equations representing the information is:
x+y=22
0.5x+2y=25

4 0

3 years ago

Three fractions between 4/5 and 4/6

Ilya [14]

4/5=24/30 and 4/6=20/30 So three easy fractions between these are 21/30=7/10, 22/30=11/15 and 23/30.

5 0

3 years ago

Trying to understand this question

Varvara68 [4.7K]

Answer:

option 2 I think sorry if its incorrect

5 0

3 years ago

The function f(x) = –x2 + 20x – 75 models the profit from one customer, in dollars, a shop makes for printing photos, where x is

trasher [3.6K]

The function is graphed as shown below

Part A:

We use the formula $- \frac{b}{2a}$ to find the vertex of the function. A quadratic function of the form of $a x^{2} +bx+c$ and equating this form to the given function $- x^{2} +20x-75$ , we have
$b=20$ and $a=-1$ .

Substituting $a$ and $b$ into the vertex formula, we have
$x=- \frac{20}{2(-1)}=10$ , as shown in the graph

This calculation means that the highest profit is achieved when the number of photo printed equals to ten photos

Part B:

We can find solution to this equation by factorising

$- x^{2} +20x-75=0$
$-( x^{2} -20x+75)=0$
$x^{2} -20x+75=0$
$(x-5)(x-15)=0$
$x=5$ and $x=15$ , as shown in the graph

The two values means that the company makes no profit when they either produce 5 or 15 photos

8 0

4 years ago

Round to the nearest tenth Pythagorean Theorem

Lemur [1.5K]

I think 8.0 is the answer

4 0

3 years ago