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3 years ago

What is 9x for x = 4

Mathematics

1 answer:

Marysya12 [62]3 years ago

7 0

Answer:

Step-by-step explanation:

9x is equal to 9 multiplied by x.

x=4 so it is 9 x 4

9 x 4=36

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A scatter plot was made to show the value of certain cars based on the age of the car in years. The equation of the scatter plot

Mashutka [201]

Am not sure but I think it C

6 0

3 years ago

Read 2 more answers

in the given figure the side BC is extended to D.IF BE is the bisectorof angle ABC and CE is the bisector of angle ACD THEN PROV

Harlamova29_29 [7]

Answer:

bc or 2.5

Step-by-step explanation:

I think thats right

3 0

3 years ago

HELP PLEASE

mario62 [17]

Answer:

26.4

Step-by-step explanation:

<u>Law Of Cosines:</u>

$cos(A)=\frac{b^2+c^2-a^2}{2bc}$

This should work for any side. This can generally be thought as:

$cos(\text{angle}) = \frac{\text{sum of squares of two other sides-opposite side squared}}{\text{2 times the product of the other two sides}}$

If this is too confusing here's the formula for the other sides (which is essentially the same, just different variables)

$cos(B)=\frac{a^2+c^2-b^2}{2ac}$

$cos(C) =\frac{a^2+b^2-c^2}{2ab}$

Anyways now just plug in the known values into the equation

$cos(A)=\frac{4^2+6^2-3^2}{2(6)(4)}\\$

Square and multiply values

$cos(A)=\frac{16+36-9}{48}$

Add the values in the numerator

$cos(A)=\frac{43}{48}$

Take the inverse of cosine on both sides

$A=cos^{-1}(\frac{43}{48})$

calculate arccosine (inverse cosine) using a calculator

$A\approx 26.384$

Round to nearest tenth

$A\approx26.4$

7 0

2 years ago

4 has how many modulus points

hoa [83]

Mod just means you take the remainder after performing the division. Since 4 goes into 2 zero times, you end up with a remainder of 2.

3 0

3 years ago

X(x+5)+6(x+5)=(x+5)(?)<br> help

Karo-lina-s [1.5K]

Answer:

x = -25/12 or x = -0.2

Step-by-step explanation:

x(x+5)+6(x+5)=(x+5)

Distribute

x^2 + 5x + 6x + 30 = x + 5

Combine

x^2 + 11x + 30 = x + 5

Subtract 1x from both sides

x^2 + 10x + 30 = 5

Subtract 30 from both sides

12x = -25

Divide 12 on both sides

x = -25/12 or -0.2

3 0

3 years ago