What is 7 7/8- 31/4 simplified

Answers

Answer 1

Answer: $7(7)/(8)-(31)/(4)=7(7)/(8)-(28+3)/(4)=7(7)/(8)-7(3)/(4)=7(7)/(8)-7(3\cdot2)/(4\cdot2)=7(7)/(8)-7(6)/(8)=\boxed{(1)/(8)}$

Answer 2

Answer: 7 7/8 = 63/ 8 ;
31/ 4 = 62/ 8 ;
63 / 8 - 62 / 8 = 1 / 8 .

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if the range of the function f(x)=x/4 is {28,30,32,34,36}, what is its domain?a. {112, 120, 128, 136, 144}b. {118, 122, 124, 132, 145}c. {110, 118, 122, 124, 137}d. {111, 124, 128, 132, 146}

Answers

$f(x)=(x)/(4)\to y=(x)/(4)\to x=4y\n\ny\in\{28;\ 30;\ 32;\ 34;\ 36\}\n\n4\cdot28=112\n4\cdot30=120\n4\cdot32=128\n4\cdot34=132\n4\cdot36=144\n\nAnswer:D=\{112;\ 120;\ 128;\ 136;\ 144\}\to\fbox{a.}$

A student is deriving the quadratic formula. Her first two steps are shown. Step 1: –c = ax2 + bx Step 2: -c = a[x^2+b/ax] Which best explains or justifies Step 2? division property of equality factoring the binomial completing the square subtraction property of equality

Answers

Given choices:

(1) division property of equality

(2) factoring the binomial

(3)completing the square

(4)subtraction property of equality

Answer : (2) factoring the binomial

Step 1: $-c = ax^2 + bx$

Step 2: $-c = a[x^2+(b)/(a) x]$

In step 2, 'a' is taken out from $ax^2 + bx$ . when we take out 'a' we divide each term by 'a'. so it becomes $a[x^2+(b)/(a) x]$

'a' is factored out in step 2. we call it as factoring a binomial.

Answer:

answer is B

Step-by-step explanation:

PLEASE HELP LAST TWO QUESTIONS, I USED ALL MY POINTS TO POST THIS PLEASE PLEASE PLEASE HELP VERY IMPORTANT

Answers

10.
if we were tosubsitute the points and graph the equation we would notice that theshape is the same for both: a 45 degree angle line that goes upleft andup right
the graph of y=|x| looks like a right angle corner that is facing up that is ballancing on the point (0,0)
thegraph of y=|x|-4 is the same except that the graph is shifter 4 unitsto the right ie. the point ofo the graph/rightangle is on point (4,0)

14.
slope intercept form which is y=mx+b
m=slope b=y intercept
m=4/3
y=4/3x+b
one given solution/point is (9,-1)
one solution is x=9 and y=-1 so subsitute and solve fo b
-1=4/3(9)+b
-1=36/3+b
-1=12+b
subtract 12 from both sides
-11=b
the equation si y=4/3x-11
see which one converts to the correct form
after trial and error we find that y-1=4/3(x-9) is the answer

Bryan is cooking cupcakes for a bake sale at his club. The recipe calls for 12 cups of flour. He has already put 3 cups of flour in the mixing bowl. How many more cups does he need to put in? Write an equation to represent this problem. Then solve.

Answers

Answer:

Bryan needs 9 cups more.

Step-by-step explanation:

Bryan is cooking cupcakes for a bake sale at his club. The recipe calls for 12 cups of flour.

Number of cups of flour, he already has = 3

Lets say he needs x cups more.

So, equation forms = $12=x+3$

=> $12-3=x$

x = 9

Hence, Bryan needs 9 cups more.

Answer:

9 cups

Step-by-step explanation:

12-3 = 9

Corresponding angles form when a transversal intersects with two parallel lines.True
False

Please help

Answers

Answer: True

When two lines are crossed by another line (which is called the Transversal), the angles in matching corners are called corresponding angles. When the two lines are parallel Corresponding Angles are equal.

A hat contains the names of seven boys and three girls. If one name is drawn from the hat at random, P(Boy) =

Answers

P(Boy)

= Number of boys/Total number of people

= 7 / (7+3)

=7/10

=0.7

Answer:

7/10 (7 over 10) or 0.7

There are 7 boys and 3 girls, combined they equal to 10. So, the probability of picking a boy is very likely to be chosen because the probability is over 50% (70%).

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Simplify fully 4x + 3y -2 + 2x - 8y -6

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Name each polynomial by degree and number of terms of -7