Answer:
To evaluate the expression 2^x − x^2 for x=5, we need to substitute 5 for x and simplify. Using the order of operations, we get:
2^x − x^2
= 2^5 − 5^2
= 32 − 25
= 7
So, the expression 2^x − x^2 evaluates to 7 when x=5.
Step-by-step explanation:
Math sucks.it's boring
Answer:
we cant see
Step-by-step explanation: closer picture
Polygon ABCD with vertices at A(1, 1), B(3, 1), C(3, 2), and D(1, 2) is dilated to create polygon A′B′C′D′ with vertices at A′(3, 3), B′(9, 3), C′(9, 6), and D′(3, 6). Determine the scale factor used to create the image.
3
2
one half
one third
To determine the scale factor used to dilate polygon ABCD to A′B′C′D′, we can compare the corresponding side lengths.
The distance between A(1, 1) and B(3, 1) is 2 units, and the distance between A′(3, 3) and B′(9, 3) is 6 units, so the horizontal side has been scaled by a factor of 6/2 = 3.
Similarly, the distance between A(1, 1) and D(1, 2) is 1 unit, and the distance between A′(3, 3) and D′(3, 6) is 3 units, so the vertical side has been scaled by a factor of 3/1 = 3.
Since both scaling factors are equal to 3, the overall scale factor used to dilate the polygon is 3. Answer: 3.
PLEASE IS MATH 8th GRADE
Answer: G: 1.4 in
Explanation: it's just basic math for me, let me kno if u got it right
the answer is g: 1.4 inches
it says the answer right in the directions, giving the formula for finding the circumference
hope this helps you and pls mark as brainliest
"C" stands for the __________.
A.) Circle
B.) Cost
Answer:
c=
Step-by-step explanation:
cost
what is the perimeter of a stained glass semi-circle if the diameter is 3 feet?
Answer:
The perimeter of the stained glass semi-circle is 3π feet.
Step-by-step explanation:
The perimeter of a semi-circle is half of the circumference of the full circle with the same diameter.
The circumference of a circle with diameter 3 feet is:
C = πd = π(3) = 3π feet
Therefore, the circumference of the full circle is 3π feet, and the circumference of the semi-circle is half of that:
C(semi-circle) = 1/2(3π) = 3/2π feet
However, the stained glass semi-circle has a curved edge, so we need to add the length of that edge to the perimeter. The curved edge of a semi-circle is half of the circumference of the full circle, or:
C(curved edge) = 1/2(2πr) = πr, where r is the radius of the circle
Since the diameter of the circle is 3 feet, the radius is half of that:
r = d/2 = 3/2 feet
So the curved edge of the stained glass semi-circle is:
C(curved edge) = π(3/2) = 3/2π feet
Adding this to the straight edge perimeter, we get:
Perimeter = C(semi-circle) + C(curved edge)
= (3/2π) + (3/2π)
= 3π feet
Therefore, the perimeter of the stained glass semi-circle is 3π feet.
I will give 20 points pls help
Answer:
Airplane A has a lesser Interquartile range.
Step-by-step explanation:
To find the interquartile range, subtract the lower quartile from the upper quartile.
Airplane A = Upper quartile - lower quartile
Airplane A = 225 - 209 = 16
Airplane B = Upper quartile - lower quartile
Airplane B = 230 - 205 = 25
Therefore airplane a has a lesser interquartile range.
Please help me put the coordinates on and get the slope!
Answer:
Step-by-step explanation:
Slope
[tex]m=\frac{y2-y1}{x2-x1} \\\\m= \frac{3/2-(-3/2)}{3/2-(-3/2)}\\\\m=\frac{3/2+3/2}{3/2+3/2}\\ \\m=\frac{3}{3}\\ \\m=1[/tex]
slope: m=1
y=mx+b
y=1x+0
Is 600 ÷ –15 positive or negative?
The diagram shows the floor plan for a classroom. the meeting center will be covered with carpet, and the rest of the floor will be covered in tile. The tile costs $4.90 per square foot. The budget for the tile is 3000. Is there enough money in the budget to pay for the tile?
PLSSSSS ANSWER QUICKLY PLSSSS!!!!!
ANSWER
its the second one
LOG [tex]( x^{2} -2X(X-1)\\X-1^{2}[/tex]
Step-by-step explanation:
Please help me out on this It would mean a lot. Needed by tomorrow please.
Answer: x-2 =4
Step-by-step explanation:
First of all you want to undo the multiplication. So what ever you do to one side you do to the other so divide 5 from both sides and you get x-2=4
Answer:
The answer for x-2=4
x=4+2;x=6
Step-by-step explanation:
5(x-2)=20
divide both sides by t
5(x-2)/5=20/5
(x-2)=4
x=4+2=6
Jenny is making jewelry craft kits. She purchases 3 bags of each color band. She divides the
total number of bands equally into 4 kits. How many bands are in each kit?
Answer: B. 195
Step-by-step explanation:
Answer: A: 65 brands.
Step-by-step explanation:
First, add up each number of brands to get 260.
Then divide it by four, to get 65. (as in 65 brands per kit)
Hope this helps!
anybody know this thing
please mark me brainliest if I'm right
Pls answer this question ASAP i beg of u
Answer:
Step-by-step explanation:
To find the interquartile range, we first need to find the values of the first and third quartiles.
The median of the data set is 4. To find the first quartile, we take the median of the lower half of the data set:
1 1 3 3 | 4 4 5 7 7
^
First quartile = 3
To find the third quartile, we take the median of the upper half of the data set:
1 1 3 3 | 4 4 5 7 7
^
Third quartile = 7
The interquartile range is the difference between the third quartile and the first quartile:
7 - 3 = 4
Therefore, the interquartile range of the data set is 4.
Please show me where I went wrong - I'll give Branliest!
Answer:x=1 1/2
Step-by-step explanation:
equation 3/4=.5x
you have to divide 3/4 and .5 by .5
3/4 divided by .5=
3/4 divided by 1/2=
3/4*2/1= 6/4
that simplified is 1 1/2
Marley surveyed the students in 7th grade to determine which type of social media they most commonly used. The data that Marley obtained is given in the table.
Type of Social Media Tweeter VidTok Headbook Picturegram
Number of Students 85 240 125 50
Which of the following circle graphs correctly represents the data in the table?
Choice A: a circle graph titled social media usage, with four sections labeled headbook 17 percent, picturegram 48 percent, tweeter 25 percent, and vidtok 10 percent
Choice B: a circle graph titled social media usage, with four sections labeled vidtok 17 percent, headbook 48 percent, picturegram 25 percent, and tweeter 10 percent
Choice C: a circle graph titled social media usage, with four sections labeled tweeter 17 percent, vidtok 48 percent, headbook 25 percent, and picturegram 10 percent
Choice D: a circle graph titled social media usage, with four sections labeled picturegram 17 percent, tweeter 48 percent, vidtok 25 percent, and headbook 10 percent
Answer:
Choice C
Step-by-step explanation:
We first have to find the sum of the students.
85 + 240 + 125 + 50 = 500
Next, we have to find the percentage of each group of students for each group.
Users of Tweeter = 85 (17%)
Users of VidTok = 240 (48%)
Users of Headbook = 125 (25%)
Users of Picturegram = 50 (10%)
Therefore C is the answer
Write – 21/100 as a decimal number.
Answer:
The answer for -21/100 as a decimal number is -0.21
Step-by-step explanation:
-21/100= -0.21
Answer:0.21
Step-by-step explanation:21÷100
(Similar Triangles MC)
Triangle XYZ is similar to triangle JKL.
triangle XYZ with side XY labeled 8.7, side YZ labeled 7.8, and side ZX labeled 8.2 and triangle JKL with side JK labeled 10.44
Determine the length of side LJ.
8.79
9.36
9.84
10.13
Answer:
C) 9.84
Step-by-step explanation:
JK ~ XY
XY = 8.7
JK = 10.44
10.44/8.7 = 1.2
That’s the scale or dilation
LJ ~ ZX
ZX = 8.2
8.2 X 1.2 = 9.84
LJ = 9.84
The length of side LJ in the triangle JKL is 9.36.
We are given that triangle XYZ is similar to triangle JKL, which means that the corresponding sides are proportional.
We are also given the lengths of the sides of triangle XYZ, so we can use these lengths to find the corresponding sides of triangle JKL.
The ratio of the corresponding sides of triangle XYZ to triangle JKL is:
XY : JK = 8.7 : 10.44
YZ : KL = 7.8 : 9.36
ZX : LJ = 8.2 : x
Since the two triangles are similar, we know that the ratios of the corresponding sides are equal.
Therefore, we can set the two ratios equal to each other and solve for x, the length of side LJ:
8.7 / 10.44 = 7.8 / 9.36 = 8.2 / x
Cross-multiplying, we get:
8.7 * x = 10.44 * 7.8
x = (10.44 * 7.8) / 8.7
x = 9.36
Therefore, the length of side LJ is 9.36.
To learn more about length here:
https://brainly.com/question/32060888
#SPJ2
Marley surveyed the students in 7th grade to determine which type of social media they most commonly used. The data that Marley obtained is given in the table.
Type of Social Media Headbook Picturegram Tweeter VidTok
Number of Students 85 240 125 50
Which of the following circle graphs correctly represents the data in the table?
Choice A: a circle graph titled social media usage, with four sections labeled headbook 17 percent, picturegram 48 percent, tweeter 25 percent, and vidtok 10 percent
ChoiceB: a circle graph titled social media usage, with four sections labeled vidtok 17 percent, headbook 48 percent, picturegram 25 percent, and tweeter 10 percent
Choice C: a circle graph titled social media usage, with four sections labeled tweeter 17 percent, vidtok 48 percent, headbook 25 percent, and picturegram 10 percent
ChoiceD: a circle graph titled social media usage, with four sections labeled picturegram 17 percent, tweeter 48 percent, vidtok 25 percent, and headbook 10 percent
Answer:
The answer to your problem is, B. a circle graph titled social media usage, with four sections labeled vidtok 17 percent, headbook 48 percent, picturegram 25 percent, and tweeter 10 percent
Step-by-step explanation:
By adding all the numbers you get 500, but you need to make it 100% so you divide the total number by five. To know what percent out of 100 you need to divide all of the variables by 5.
85 ÷ 5 = 172
40 ÷ 5 = 48
125 ÷ 5 = 25
50 ÷ 5 = 10
Thus the answer to your problem is, B. a circle graph titled social media usage, with four sections labeled vidtok 17 percent, headbook 48 percent, picturegram 25 percent, and tweeter 10 percent
whats 3(x+7)=-12
what
is
3(x+7)=-12
Answer: -11
Step-by-step explanation:
Solve for x 3x+7=12. 3x+7=12 3 x + 7 = 12. Step 1. Move all terms not containing x x to the right side of the equation.
2. Marcus worked the following problem out in his notebook. Is his answer correct? Did he do the work correctly? If not,
explain to Marcus what he did right and also what he needs to do to correct his work.
13-
-13'
-
1
169
Answer:
Step-by-step explanation:
slope 3
...................................................................
Screenshot 1 is the question and screenshot 2 is answer options
Answer:
-[tex]\frac{1}{2}[/tex]
Answer: i believe it is E if not then its H
Step-by-step explanation:
m=(y2-y1)/(x2-x1)
-3-(-6) = -3+6
-4-2 -4-2
-3+6 = 3 reduce) = 1
-4-2 -6 2
Please help me I will give brainiest.
Answer:
Play soccer: _________67% / 33% / 100%
Do not play soccer:___ 45% / 55% / 100%
Total : _____________112% / 88% / 200%
Step-by-step explanation:
play soccer: total is 90, to find percentage :
60/90 = 0.6666666667 estimated = 0.67
0.67 x 100 = 67%
30/90 = 0.3333333333 estimated = 0.33
0.33 x 100= 33%
33% + 67% = 100%
don’t play soccer : total is 60, to find percentage:
27/60 = 0.45
0.45 x 100 = 45%
33/60= 0.55
0.55 x 100 = 55%
45% + 55% = 100%
Total for first column going down
67% + 45% = 112%
Second column going down
33% + 55%= 88%
Third column going down
100% + 100% = 200%
Third column going across
112% + 88%= 200%
Play soccer: 67% / 33% / 100%
Do not play soccer:45% / 55% / 100%
Total :112% / 88% / 200%
( •_•)>⌐■-■ (⌐■_■)
PLSSSSSSSSS HELP QUICK!!!!!!!
Answer: divide and multiply
Step-by-step explanation: using PEMDAS, the first steps must be inside of the parenthesis; going further, the nex steps (multiplication and division) are interchangeable, so you do whichever comes first (in this case, -24 / 6 followed by that times 2)
Which linear equation shows a proportional relationship?
y = −2
y = 3x + 1
y equals three halves times x
y equals one half times x minus 3
Answer:
The correct answer:
y equals three halves times x (y = (3/2)x)
Divide negative 6 and 2 over 5 ÷ negative 4 and 3 over 7.
negative 224 over 155
224 over 155
negative 519 over 35
519 over 35
Answer:
-18.2608695652
Step-by-step explanation:
Idont know if its right but thats the answer for the first line if am right
The circle graph describes the distribution of preferred music from a sample of 400 randomly selected middle school students.
a circle graph titled preferred music, with five sections labeled rock 13 percent, hip hop 25 percent, pop 35 percent, classical 13 percent, and jazz 14 percent
Which of the following conclusions can we draw from the circle graph?
Choice A: Pop is the preferred music for 35 students.
Choice B: Jazz is the preferred music for 56 students.
Choice C: Together, Hip Hop, Rock, and Jazz are the preferred music for less than half the students.
Choice D: Together, Hip Hop and Pop are the preferred music for 260 students.
Answer:
Choice B
Step by step explanation:
14% of 400 is 56, which is the amount for Jazz.
what is the radius of a button if the circumference is 3 1/2 in
Answer: 0.557 in
Step-by-step explanation:
We will use the formula for the circumference of a circle, substitute known values, and solve for r (radius). 3 1/2 = 3.5.
Given:
C = 2πr
Substitute known values:
(3.5) = 2πr
Divide both sides of the equation by 2π:
(3.5) = 2πr
r = 0.557 in
Liz's age is two-thirds of Debbie's age. Debbie's age is half of Freya's age. what is the ratio of Liz's age to Freya's age?
Answer:
Let's start by using variables to represent the ages of the three people:
Let L be Liz's age.
Let D be Debbie's age.
Let F be Freya's age.
From the problem, we know that Liz's age is two-thirds of Debbie's age, so we can write:
L = (2/3)D
We also know that Debbie's age is half of Freya's age, so we can write:
D = (1/2)F
To find the ratio of Liz's age to Freya's age, we need to express Liz's age and Freya's age in terms of a common variable. Since we have an equation relating Debbie's age to Freya's age, we can use that as the common variable. From the equation D = (1/2)F, we can solve for F in terms of D:
F = 2D
Now we can substitute this expression for F into the equation for Liz's age:
L = (2/3)D = (2/3)(1/2)F = (1/3)F
So Liz's age is one-third of Freya's age. The ratio of Liz's age to Freya's age is therefore 1:3.
What mixed number represents 30/8
Answer:
3 6/8
Step-by-step explanation:
30÷8=3 6/8
8×3=24
30-24=6
Answer:
The mixed that represents 30/8 is --> 3 3/4
Step-by-step explanation:
Step 1: Find the whole number
We first want to find the whole number, and to do this we divide the numerator by the denominator. Since we are only interested in whole numbers, we ignore any numbers to the right of the decimal point.
30/8= 3.75 = 3
Now that we have our whole number for the mixed fraction, we need to find our new numerator for the fraction part of the mixed number.
Step 2: Get the new numerator
To work this out we'll use the whole number we calculated in step one (3) and multiply it by the original denominator (8). The result of that multiplication is then subtracted from the original numerator:
30 - (8 x 3) = 6
Step 3: Our mixed fraction
We've now simplified 30/8 to a mixed number. To see it, we just need to put the whole number together with our new numerator and original denominator:
3 6/8
Step 4: Simplifying our fraction
In this case, our fraction (6/8) can be simplified down further. In order to do that, we need to calculate the GCF (greatest common factor) of those two numbers. You can use our handy GCF calculator to work this out yourself if you want to. We already did that, and the GCF of 6 and 8 is 2.
We can now divide both the new numerator and the denominator by 2 to simplify this fraction down to its lowest terms.
6/2 = 3
8/2 = 4
When we put that together, we can see that our complete answer is:
3 3/4