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Sati [7]
3 years ago
13

ANSWER NOW AND ILL GIVE BRAINLIEST THANKS

Mathematics
1 answer:
klio [65]3 years ago
6 0

Answer and explaination:

a. 28

12/3=4

4*7=28

b. 9

21/7=3

3*3=9

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A gift shop sells 140 wind chimes per month at $90 each. The owners estimate that for each $5 increase in price, they will sell
guapka [62]

Answer: $95

Step-by-step explanation:

Te new price will be 90 + 5x, if the price increases "x" times

The number of wind chimes sold per month will become 140 - 7x

\begin{aligned}&\text {Revenue, } \mathrm{R}(\mathrm{x})=(90+5 \mathrm{x})(140-7 \mathrm{x}) \\&R^{\prime}(x)=5(140-7 x)-7(90+5 x) \\&R^{\prime}(x)=700-35 x-630-35 x \\&R^{\prime}(x)=70-70 x=0 \\&70 x=70 \\&x=1\end{aligned}

Therefore, if the price becomes (90 + 5(1)) = $95 per wind chime, then the revenue will be maximum

6 0
3 years ago
Find the set of values of x for which y is zero in<br>the equation y=(x + 2) (2x-2)​
Alex777 [14]

Answer:

{ - 2, 1 }

Step-by-step explanation:

To determine the values let y = 0, that is

(x + 2)(2x - 2) = 0 ← in standard form

Equate each factor to zero and solve for x

x + 2 = 0 ⇒ x = - 2

2x - 2 = 0 ⇒ 2x = 2 ⇒ x = 1

The set of values are { - 2, 1 }

8 0
3 years ago
Vector u has a magnitude of 4 with a direction of 50°. Vector v has a magnitude of 6 with
Luda [366]

Answer: <8.01, 5.60>.

Step-by-step explanation:

Vector:

v= (r\cos\theta,r\sin\theta)

, where r = magnitude and \theta = angle .

As per given,

u=(4\cos 50^{\circ}, 4\sin 50^{\circ})\\\\\approx(4(0.64),4(0.77))\\\\=(2.56, 3.08)

v=(6\cos 25^{\circ}, 6\sin 25^{\circ})\\\\\approx(6(0.91),6(0.42))\\\\=(5.46, 2.52)

Consider

u+v=(2.56,3.08)+(5.46,2.52)\\\\=(2.56+5.46,3.08+2.52)\\\\=(8.02,\ 5.60)

Hence, the correct option is <8.01, 5.60>.

7 0
3 years ago
A sandwich shop has 4 different types of sandwiches: ham (H), turkey (T),
Svetach [21]

Answer:

1111111234567890-0987654321`1q2wert6y7890p[poiuytrewqqwertyui

Step-by-step explanation:

qwertyuiopoiuytrewqwertyuio

5 0
3 years ago
(4, -6), (3, -8)<br> Find midpoint
Dennis_Churaev [7]
(7/2,-7) ther I hope it help
6 0
3 years ago
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