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3 years ago

What is the product of (7x+2) and 20-3x/4

1 answer:

3 0

(7x+2)(20-3x/4) = 140x + 40 - 21x²/4 - 3x/2 = -21/4 x² + 138 1/2 x + 40

this is one of those multiplications that doesn't make the result look any simpler...

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What is the value of x?<br><br> Enter your answer, as a decimal, in the box.<br><br> cm

kirza4 [7]

Answer:

50.6 cm

Step-by-step explanation:

We can use similar triangles and proportions to solve. Put the smaller triangle side over the larger triangle side.

x 46.2-14 (This is the length of the short side of the triangle)

--------- = -------------

72.6 46.2

Using cross products

46.2 *x = (46.2-14) *72.6

46.2 *x = (32.2) *72.6

46.2x =2337.72

Divide each side by 46.2

46.2/46.2 *x = 2337.72/46.2

x = 50.6

5 0

3 years ago

What is an irrational number

timofeeve [1]

An irrational number is a number that can't be written as a simple fraction such as pi because you can't turn pi into a fraction.

3 0

4 years ago

Read 2 more answers

What is the ratio for sine

Sphinxa [80]

Answer:

Blank 1: opposite

Blank 2: adjacent

Blank 3: opposite

Blank 4: adjacent

Step-by-step explanation:

There is a trigonometric acronym for this which is:

Soh Cah Toa

Soh means that sine is opposite over hypotenuse.

Cah means that cosine is adjacent over hypotenuse.

Toa means that tangent is opposite over adjacent.

Let me actually write these out as fractions:

sine is $\frac{\text{opposite}}{\text{hypotenuse}}$

cosine is $\frac{\text{adjacent}}{\text{hypotenuse}}$

tangent is $\frac{\text{opposite}}{\text{adjacent}}$

Blank 1: opposite

Blank 2: adjacent

Blank 3: opposite

Blank 4: adjacent

4 0

3 years ago

What is the value of 7^2 x 7^0

sineoko [7]

The answer is 49

Hope this helps

7 0

3 years ago

Read 2 more answers

Determine the intercepts of the function f(x)=2x^2+18x+28

Sonja [21]

The intercepts are -2 and -7 on the x-axis

7 0

3 years ago