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klemol [59]
2 years ago
8

What’s the least common multiple of the denominators of 9+3/4x=7/8x-10

Mathematics
1 answer:
Alona [7]2 years ago
8 0

Answer:

x = 72

Step-by-step explanation:

9 +  \frac{3}{4} x =  \frac{7}{8} x - 10 \\  \frac{3}{4}x  -  \frac{7}{8} x =  - 10 - 9 \\  \frac{6}{8} x -  \frac{7}{8} x =  - 19 \\  -  \frac{1}{8}x =  - 19 \\ x =  \frac{ - 9}{ -  \frac{1}{8} }  \\ x = 72

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Simplify the expression: (1 − 5i)(3 + 7i).<br><br> 38 + 8i<br> −32 + 8i<br> 38 − 8i<br> −32 − 8i
photoshop1234 [79]
Your answer is 38-8i because what you do is 1 times 3 and get 3 then 1 times 7i and get 7i then you do -5i times 3 and you get -15i then -5i times 7i and you get -35i2 and the square will cancel out the negative and make it 35 then add that to the 3 and you get 38 then take the -15i +7i and get -8 do your answer is 38-8i
3 0
3 years ago
While visiting a​ memorial, a person approximated the angle of elevation to the top of the memorial to be 35º. After walking 255
Alenkasestr [34]

Draw a diagram to illustrate the problem as shown in the figure below.

Let h the height of the hill. =

At position A, the angle of elevation is 40°, and the horizontal distance to the foot of the hill is x.

By definition,

tan(40°) = h/x h = x tan40 = 0.8391x

(1)

At position B, Joe is (x - 450) ft from the foot of the hill. His angle of elevation is

40 + 18 = 58°.

By definition, tan(58°) = h/(x - 450)

h = (x - 450) tan(58°) = 1.6003(x-450)

h = 1.6003x - 720.135 (2)

Equate (1) and (2).

1.6003x - 720.135 = 0.8391x 0.7612x = 720.135

x = 946.0523

From (1), obtain

h = 0.8391*946.0523 = 793.8 ft

Answer: The height of the hill is approximately 794 ft (nearest integer)

6 0
2 years ago
How to do zero-product property
SVEN [57.7K]
An number multiplied by zero is zero. This is because you are essentially saying that 1,000 0 times is zero.
6 0
3 years ago
Ok I know i was told it was false on the last one but I still don’t really understand the answer tho
Sunny_sXe [5.5K]

Answer:It’s false

Step-by-step explanation:

because it goes over 7 feet and they wanted exactly 7 feet

7 0
2 years ago
Given: circle k(O), m∠P=95°, m∠J=110°, m∠LK=125°<br> Find: m∠PJ
IRINA_888 [86]

Answer:

The measure of the arc PJ is 75\°

Step-by-step explanation:

step 1

Find the measure of angle L

we know that

In a inscribed quadrilateral opposite angles are supplementary

so

m

we have

m

substitute

m

m

step 2

Find the measure of arc KJ

we know that

The inscribed angle measures half that of the arc comprising

so

m

substitute the values

95\°=\frac{1}{2}(125\°+arc\ KJ)

190\°=(125\°+arc\ KJ)

arc\ KJ=190\°-125\°=65\°

step 3

Find the measure of arc PJ

we know that

The inscribed angle measures half that of the arc comprising

so

m

substitute the values

70\°=\frac{1}{2}(65\°+arc\ PJ)

140\°=(65\°+arc\ PJ)

arc\ PJ=140\°-65\°=75\°

5 0
2 years ago
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