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SVETLANKA909090 [29]
3 years ago
6

What is x in the equation please help.

Mathematics
2 answers:
finlep [7]3 years ago
4 0
X=12
(x+42)+3x=90
4x+ 42 = 90
iogann1982 [59]3 years ago
3 0

Answer:

6

Step-by-step explanation:

vbgdfbgdf bbn bgdfjszvhy

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The ratio of grade 7's to grade 8's is 5:3. If there
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Answer:

240 students

Step-by-step explanation:

Grade 7 : Grade 8 = 5 : 3

Number of seventh grade students = 5x

Number of Eighth grade students = 3x

3x = 90

x = 90÷3

x = 30

Total students = 5x + 3x = 8x = 8 * 30 = 240

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3 years ago
What is the antiderivative of secx-tanx
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Step-by-step explanation:

∫ (sec x − tan x) dx

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QveST [7]

Answer:

Step-by-step explanation:

The formula for determining the the area of a sector is expressed as

Area of Sector = θ/360 × πr²

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θ represents the central angle.

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r represents the radius of the circle.

From the information given,

The central angle is π/7 radian. Converting to degrees, it becomes

π/7 × 180/π = 180/7 = 25.714 degrees.

Area of sector = 77 square meters

Therefore

77 = 25.714/360 × 3.14 × r²

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5 0
3 years ago
Ashton needs $120 but has only saved 60% so far. How much more money does he need
Kamila [148]

Hello there! Ashton needs 48 more dollars.

Well, to start, you want to find 60% of 120. To do this, you first have to convert 60% into a decimal by dividing it by 100.

60/100 = 0.6

Next, multiply 0.6 by your total needed, 120, to finish finding 60% of 120.

120 x 0.6 = 72.

So he already has 72 dollars, but how many more does he need? You can find this by subtracting 72 from 120.

120 - 72 = 48.

So, this means he needs 48 more dollars. I hope this helps and have a great rest of your day! Please let me know if you need further help with this question. :)

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3 years ago
If a Play Station was bought for $558 after a 10%
Ivanshal [37]

Answer:

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