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3 years ago

Ppppplllllllllzzzzzzz helppppppppp -7/9 - 5/10

1 answer:

7 0

Simplify 5/10 to 1/2

find the LCD of both fractions and that would be 18

make the denominators the same as the LCD

Simplify, now denominators are equal

join the denominators

simplify it now (23/-18)

convert to mixed fraction

Answer: -1 5/18.

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In ΔDEF, the measure of ∠F=90°, FD = 63 feet, and DE = 71 feet. Find the measure of ∠E to the nearest degree.

stepan [7]

Answer:

Step-by-step explanation:

∠F=90°, FD = 63 feet, and DE = 71 feet.

That's a right angle triangle also.

measure of ∠E to the nearest degree

sin∠E = 63/71

sin∠E = 0.8873

∠E= sin^-1 0.8873

∠E= 62.5°

7 0

3 years ago

If 2x + 5y = 10 and x = 3y + 1, what is 11x + 11y?

saul85 [17]

You have to solve the two equations by eliminating x or y
2x+5y=10 
x-3y=1 
Multiply all terms of second equation by two and subtract from first equation, thus eliminating x 

2x+5y-2x+6y=10-2 
11y=8 
y=8/11 
x=3y+1=3* 8/11+1=25/11 
11x+11y= 11*25/11+ 11*8/11 
= 25+8=33

6 0

3 years ago

If a yeet monster has 21 spoons and yeeted only 8, and bought only 2 back how much would he have left over?

yuradex [85]

Answer:

21-8=13

13+2=15

answer 15

4 0

2 years ago

Read 2 more answers

PLZ HELP ASAP! ILL MARK BRAINLEST!

Sav [38]

Question 1.) Factor completely $12x^{4}+ 6x^{3}+18x^{2}$

Since $6$ divides all the three terms of the equation, so we take $6$ common out from the equation.

i.e., $6(2x^{4}+ 1x^{3}+3x^{2})$

Now, since $x^{2}$ divides all the three terms of the equation, so we take $x^{2}$ common out from the equation.

i.e., $6x^{2}(2x^{2}+ 1x+3)$

Now, this cannot be factored further as $2x^{2}+ 1x+3$ is a quadratic equation and taking out discriminant of it is:

$D = (1)^2 - 4(2)(3)\\ \ \ = 1- 24\\ \ \ = -23$

Since, the discriminant is less than zero. Therefore, the factored form of the given equation : $12x^{4}+ 6x^{3}+18x^{2}$ is : $6x^{2}(2x^{2}+ 1x+3)$

Question 2.) $7x^{3}y+ 14x^{2} y^{3} - 7x^{2}y^{2}$

Since $7$ divides all the three terms of the equation, so we take $7$ common out from the equation.

i.e., $7(x^{3}y+ 2x^{2} y^{3} - x^{2}y^{2})$

Now, since $x^{2}y$ divides all the three terms of the equation, so we take $x^{2}y$ common out from the equation.

i.e., $7x^{2}y(x+ 2y^{2} - y)$

Therefore, the factored form of the given equation : $7x^{3}y+ 14x^{2} y^{3} - 7x^{2}y^{2}$ is : $7x^{2}y(x+ 2y^{2} - y)$

Question 3.) What is the Greatest Common Factor of $x^{6}$ and $x^{3}$ ?

The Greatest Common Factor of two numbers is the biggest number which divides both the given numbers completely.

Now, for the expressions $x^{6}$ and $x^{3}$ :

Since, $x^{3}$ divides both the expressions completely and it is the biggest expression which divides both the expressions.

Therefore, $x^{3}$ is the Greatest Common Factor of $x^{6}$ and $x^{3}$

7 0

3 years ago

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The price of grapes at a farm is $1.85 per pound. Which equation can be used to determine c, the total price of n pounds of grap

rodikova [14]

The first thing we must do to solve the problem is to define the variables.
We have then:
n: pounds of grapes
c: total price
We have to:
"The price of grapes at a farm is $ 1.85 per pound"
Therefore, the equation will be:
c = 1.85n
Answer:
c = 1.85n

7 0

2 years ago

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