What is the factorization of the expression below?16x^2 - 49
A. (8x + 7)(2x-7)
O B. (4x + 7)(4x - 7)
O C. (8x-7)(2x-7)
O D. (4x-7)(4x-7)
Answers
Answer:
B
Step-by-step explanation:
16 x² - 49 ← is a difference of squares and factors in general as
a² - b² = (a + b)(a - b), thus
16x² - 49
= (4x)² - 7²
= (4x + 7)(4x - 7) → B
Answer:
B
Step-by-step explanation:
There is no number between 16x and 49. So only think about the number being squared for 49; which is 7.
Then 49 is negative, so you must have both positive and negative signs in both parenthesis. Otherwise, positive times positive is positive, and negative times negative is also positive.
4x4 is 16. That's why you put fours in front of Xs.
I am sorry for getting this wrong (if i did)
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A rug covers 1/4 of the floor.The area of the rug is 10ft what is the area of the floor?
Answers
Answer:
A
Step-by-step explanation:
Answers
Answer:
b = -18
Step-by-step explanation:
Multiply both sides by -6/1 which is the reciprocal of -1/6
(-6/1)*(-1/6)b=3*(-6/1)
b=-18/1 = -18
Answer:
-18
Step-by-step explanation:
-1/6b=3
Multiply the reciprocal of -1/6 to both sides, this will get x by itself
(-6/1)*-1/6b=3*(-6/1)
b= -18/1
b= -18
Answers
Answer:
Step-by-step explanation:
Let find the middle point between both rationals. That is to say:
Answers
9 ways are possible hope this helped straight and to the point not gonna go and show exactly how just trust me
Final answer:
In bowling, there are ten possible ways to get a spare. This involves knocking down a total of 10 pins in two throws, regardless of the number of pins knocked down in each throw.
Explanation:
In bowling, there are multiple ways to get a spare. A spare requires all ten pins to be knocked down, but it does not matter how many pins were knocked down in each throw, only that the total after two throws is ten. For example, you could knock down 9 pins in the first throw and 1 in the second, or 5 pins in both throws. Therefore, there are ten possible ways to get a spare, ranging from knocking down 1 pin on the first throw and 9 on the second, to knocking down 9 pins on the first throw and 1 on the second throw, and every combination in between.
Learn more about Bowling Math here:
#SPJ2
Thank you so much!
I literally have no idea how to do this.
Answers
What is the x-intercept ? It's the point where the graph crosses the x-axis.
But y=0 at every point on the x-axis ! So the x-intercept is the point where
5x + 3(0) = k
5x = k
x = 0.2 k
Similarly ... What is the y-intercept ? It's the point where the graph crosses the
y-axis. But x=0 at every point on the y-axis ! So the y-intercept is the point where
5(0) + 3y = k
3y = k
y = k/3
The sum of the x- and y-intercepts is 32.5 .
0.2k + k/3 = 32.5
Multiply each side by 5 :
k + 5k/3 = 162.5
Multiply each side by 3 :
3k + 5k = 487.5
8k = 487.5
Divide each side by 8 :
k = 60.9375
The x-intercept is (0.2k, 0) = the point (12.1875, 0) .
The y-intercept is (0, k/3) = the point (0, 20.3125) .
Those are the two points. Now it wants you to find the distance between them.
Do you remember how to find the distance between 2 points ?
Find the (difference of their x-values) and square it.
Find the (difference of their y-values) and square it.
Add the two squares together.
Take the square root of the sum.
That's the distance between the points.
(12.1875)² + (20.3125)² = the square of the distance.
If you don't get 23.688 for the distance, then check your arithmetic.
Lin jumped rope for 24 minutes. What percentage of Diego’s time is that?
Noah jumped rope for 9 minutes. What percentage of Diego’s time is that?
Diego 20/20 = 1
Jada 15/20 =
Lin 24/20 =
Noah 9/20 =
Answers
Answer:
Jada 15
Lin 24
Noah 9
Diego 20
Step-by-step explanation:
Hope I helped