Answer:
5
Step-by-step explanation:
[tex]\frac{-10}{-2} \\\\5[/tex]
The rectangle below has an area of 70 square meters.
Find the dimensions of the rectangle.
(x - 11)
(x - 8)
Answer:
The side lengths are 10 by 7
Step-by-step explanation:
The area of a rectangle is
A = l*w
70 = (x - 11)(x - 8)
FOIL
70 = x^2 -8x-11x+88
Combine like terms
70 = x^2 -19x +88
Subtract 70 from each side
0 = x^2 -19x +88-70
0 = x^2 -19x+18
Factor
What number multiplies to 18 and adds to -19
-18*-1 =18
-18-1 = -19
0=(x-18)(x-1)
Using the zero product property
x-18=0 x-1=0
x=18 x=1
But x cannot x=1 because then the side lengths would be negative
x-18 = 10
x-11 = 7
The side lengths are 10 by 7
Arrange the numbers in ascending order 2121,3625,8750,6540
2121, 3625,6540 and 8750 is the answer.
hope it helps
Which of the following represents 4 square root x3 in exponential form?
1) x^3/4
2) x^4/3
3) 4x^3
4) 3x^4
Answer:
3
Step-by-step explanation:
im in 8th grade this is what were doing right now
How is the unbiasness of estimators defined? Use correct vocabulary.
Don't answer if you don't know for gods sake you're just wasting my points
The unbiased estimator
what's the surface area ratio & the volume ratio??
please help me ASAP!!
Answer:
Step-by-step explanation:
Volumes of two spheres A and B = 648 cm³ and 1029 cm³
Things to remember:
1). Scale factor of two objects = [tex]\frac{r_1}{r_2}[/tex] [[tex]r_1[/tex] and [tex]r_2[/tex] are the radii of two circles]
2). Area scale factor = [tex]\frac{(r_1)^2}{(r_2)^2}[/tex]
3). Volume scale factor = [tex]\frac{(r_1)^3}{(r_2)^3}[/tex]
Volume scale factor Or Volume ratio = [tex]\frac{V_A}{V_B}[/tex]
[tex]\frac{(r_1)^3}{(r_2)^3}= \frac{648}{1029}[/tex]
[tex]\frac{r_1}{r_2}=\sqrt[3]{\frac{648}{1029} }[/tex]
[tex]\frac{r_1}{r_2}=\frac{6(\sqrt[3]{3})}{7(\sqrt[3]{3})}[/tex]
[tex]\frac{r_1}{r_2}=\frac{6}{7}[/tex]
Therefore, scale factor = [tex]\frac{r_1}{r_2}=\frac{6}{7}[/tex]
≈ 6 : 7
Area scale factor Or area ratio = [tex](\frac{r_1}{r_2})^2=(\frac{6}{7})^2[/tex]
= [tex]\frac{36}{49}[/tex]
≈ 36 : 49
Volume scale factor or Volume ratio = [tex]\frac{648}{1029}[/tex]
= [tex]\frac{216}{343}[/tex]
≈ 216 : 343
plsss help i’ll give brainliest if you give a correct answer
Answer:
7
Step-by-step explanation:
9w = 63
9w/9 = 63/9
w = 7
Answer:
I'm pretty sure it's 7. I hope that helps
Step-by-step explanation:
Name the diameter for the circle
Answer:
DH
Step-by-step explanation:
Veronica bought a pack of 50 CDs. She gave 8 to her friend, Leslie. Then she made 6 equal sets of CDs. How many CDs are in each set?
Answer:
8 CDs
Step-by-step explanation:
Veronica started with 50 CDs
After giving 8 CDs to Leslie, Veronica now has 42 CDs
Now Veronica made 6 equal sets
Hence, 42/6 = 8
So there are 8 CDs in each set.
the product of two consecutive integers is 120. write an equation to find the integers.
Answer:
The consecutive even integers are
n
n + 2
n(n + 2) = 120
n2 + 2n - 120 = 0
(n + 12)(n - 10) = 0
n = -12 or 10
Step-by-step explanation:
There are 2 solutions:
n = -12
n + 2 = -10
and
n = 10
n + 2 = 12
One leg of a right triangle is 7 and the hypotenuse is 10. What is the length of the
other leg?
Answer:
L = 7.14
Step-by-step explanation:
using the Pythagorean theorem:
L² = 10² - 7²
L² = 100 - 49= 51
L = 7.14
Answer:
7.14
Step-by-step explanation:
to answer this you need to use pythagoras theorem and that is A²+B²=c²
in this case C²-A²=B²
10²=100
7²=49
100-49=51
then you need to square root 51 which gives your answer 7.14
Geometry!!! Pls help!! Mathxl!! Full points!!
Answer:
3 both sides
Step-by-step explanation:
helppppppppppppppp plsssssssssssssssss
Answer: 41, think of PEMDAS while reviewing. Good luck!
Step-by-step explanation:
80 + 6(-5) + (-9)
80 + (-30) + (-9)
80 + (-39)
= 41
Two angles are shown. K is 7 times as large as L. The angles are complementary. What is the measurement in degrees for K
Answer:
∠K = 78.75°
Step-by-step explanation:
since complimentary, ∠K + ∠L = 90°
K = 7L
substitute for K:
7L + L = 90
8L = 90
∠L = 11.25°
∠K = 90° - 11.25° = 78.75°
50 points and Ill give brainiest - please help ASAP with WORK FOR IT please and thank you!! :)
2 pages with work
Answer:
1) (x + 12)²+(y+6)²= 28
comparing above equation with(x-h)²+(y-k)²=r²
we get
r=√28
h=-12
k=-6
;.centre=(-12,-6)
radius =√28 units
2) x²+(y+7)²=15
comparing above equation with(x-h)²+(y-k)²=r²
we get
r=√15
h=0
k=-7
;.centre=(0,-7)
radius=√15 units
3) (x + 4)²+(y - 1)² = 4
comparing above equation with(x-h)²+(y-k)²=r²
we get
r=√4=2units
h=-4
k=1
;.centre=(-4,1)
radius=√2units
4) (x+3)²+(y-1)²= 8
comparing above equation with(x-h)²+(y-k)²=r²
we get
r=√8=2√2units
h=-3
k=1
;.centre=(-3,1)
radius=2√2units
Write an inequality for each graph. (photos down below)
9. What is the solution to this equation? 2x + 10 = 28 help
Answer: x=9
Step-by-step explanation:
2x+10=28
2x=18
x=9
Answer:
9
Step-by-step explanation:
because 2 times 9 is 18 then plus 10 equals 28
Help with the question below
Answer:
51
Step-by-step explanation:
24 ^2+45^2=x^2
=51
Help me with this plz
Answer:
[tex]g = \frac{ x - 2}{3} [/tex]
Answer: g=x-2/3
Step-by-step explanation:
When it says make g the subject it means make it on it's own in front of the '=' sign.
To make g the subject, you have to do the inverse to 'undo' the equation.
So, instead of adding 2, you have to take away 2 from x. This would now look like this:
x-2=3g
In algebra, when a number is next to a letter it means times. So instead of multiplying g by 3, you would have to divide x-2 by 3. This would now look like this:
x-2/3=g
Hope this helps :)
Solve the linear equation 1/3x - 5 + 171 = x
Answer: x = 249
Step-by-step explanation:
A 12.5-foot ladder is leaning against the side of a house. If the ladder is resting 12 feet off the ground, how far is the ladder from the house?
A. 2 feet
B. 3.5 feet
C. 6.25 feet
D. 7 feet
Answer:
B. 3.5 feet
Step-by-step explanation:
The part leaning against the wall is the hypotenuse while the height of the ladder off the ground is the opposite and the distance of the ladder from the house is the adjacent side.
Given the following data;
Hypotenuse = 12.5 ft
Opposite = 12 ft
To find the adjacent side, we would use the Pythagorean theorem;
Hypotenuse² = opposite² + adjacent²
Substituting into the formula, we have;
12.5² = 12² + adjacent²
156.25 = 144 + adjacent²
Adjacent² = 156.25 - 144
Adjacent² = 12.25
Taking the square root of both sides, we have;
Adjacent = 3.5 feet.
Therefore, the distance of the ladder from the house is 3.5 feet.
given f(x) = 5x4- 3x2+ 6x+2. Find f(-2)
Find the area and circumference of the circle from the problem to the left. h 14 in Area= Circumferencer
Answer:
r is 14÷2=7in
r is 7
area of circle is pie R square
22÷7×7×7
154 in
since area = circumference
154=154
hope it helps
Solve the linear equation
x + y = 2
2x + 2y = -6
Answer:
Step-by-step explanation:
WORTH 100 POINTS NEED DONE ASAP WRONG ANSWERS WILL BE REPORTED THANK YOUUU
Answer:
3.
1.x=√(15²-12²)=√81=9
2.x=√(6²+6²)=6√2
3.c=√(√19²-√7²)=√(19-7)=√12
Step-by-step explanation:
4.h=10
a=b=x
we have
by using Pythagoras law
h²=x²+x²
100=2x²
x²=50
x=√50=5√2
both legs =5√2
Math
2 miles is the equivalent to how many feet?
Answer:
10,560
Step-by-step explanation:
Super easy
Brainliest please :)
Lella is fertilizing her garden. The garden is in the shape of a rectangle. Its length is 14 feet and its width is 11 feet. Suppose each bag of fertilizer covers 22
square feet. How many bags will she need to cover the garden?
Answer:
Step-by-step explanation:
14ft(11ft)(b/22ft^2)=7b
She will need 7 bags of fertilizer.
Write 0.14 as a percent.
Whats 6x-5+2x=3x-2x+9?
Answer:
X=2
Step-by-step explanation:
first combine like terms
subtract the x
add 5
lastly divide by 7
warm up !!!!!!!!!!!!
Answer:
Option C. Rational numbers can be written as a fraction where denominator is not zero.
Answer:
B
Step-by-step explanation:
Hope this helps D:
pls help no wrong answers pls
Answer:
a, b, e
Step-by-step explanation:
It is proportional since it goes at the same rate on the x and y
It has a rate of 8.5 since 17/2=8.5
at the rate of 8.5 y per one x then 4 8.5's would make 34