Answer:
B=60 C=120
Step-by-step explanation:
Supplementary angles add up to 180.
so
2x-40+2×+20=180
4×-20=180
4×=200
×=50
B 2(50)-40=100-40=60
C 2(50)+20=100+20=120
0.4 divided by 2.3 plzz fast
Answer:
divided by 2.3 plzz fastdivided by 2.3 plzz fast
Step-by-step explanation:
divided by 2.3 plzz fast
divided by 2.3 plzz fastdivided by divided by 2.3 plzz fast plzz fast
Question
A random sample of SAT scores has a sample mean ofă = 1060 and sample standard deviation of s = 195. Use the
Empirical Rule to estimate the approximate percentage of SAT scores that are less than 865.
Answer:
The approximate percentage of SAT scores that are less than 865 is 16%.
Step-by-step explanation:
The Empirical Rule states that, for a normally distributed random variable:
Approximately 68% of the measures are within 1 standard deviation of the mean.
Approximately 95% of the measures are within 2 standard deviations of the mean.
Approximately 99.7% of the measures are within 3 standard deviations of the mean.
In this problem, we have that:
Mean of 1060, standard deviation of 195.
Empirical Rule to estimate the approximate percentage of SAT scores that are less than 865.
865 = 1060 - 195
So 865 is one standard deviation below the mean.
Approximately 68% of the measures are within 1 standard deviation of the mean, so approximately 100 - 68 = 32% are more than 1 standard deviation from the mean. The normal distribution is symmetric, which means that approximately 32/2 = 16% are more than 1 standard deviation below the mean and approximately 16% are more than 1 standard deviation above the mean. So
The approximate percentage of SAT scores that are less than 865 is 16%.
It takes Naomi 4 minutes to run 5 laps. How long does it take her to run 30 laps? Use a table, double number line, tape diagram or another strategy to show your thinking.
(Please hurry I'm being timed)
Answer:
24 minutes
Step-by-step explanation:
5x6=30
4x6=24
1. The cost of a fish dinner for a restaurant is $7.95. If they sell it for $11.95, what is the percent markup?
Answer:
the answer will be
50.3144 %
1/3 1/4 3/8 7/24 5/12 which is the biggest
Answer: 5/12
Step-by-step explanation:
Answer:
Step-by-step explanation:
5/12 is the biggest
What is the slope of the line that passes through the points (2, -3) and (5, 1)
Answer:
Answer is (4) 4/3
Step-by-step explanation:
[tex]\frac{1- -3}{5-2}[/tex]
[tex]\frac{4}{3}[/tex]
Answer:
slope is 4/3
Step-by-step explanation:
1-(-3)/5-2
4/3
PleSee help!!! 10 points for it
find the equation for the line that passes through the point (4,-3), and that is perpendicular to the line with the equation y= -3/4x-3
Answer:
hi
Step-by-step explanation:
Answer
Slope between two given points (1,3) and (2,7) is
m=
2−1
7−3
=4
Then perpendicular slope is m
1
=
4
−1
The line equation with this slope is given by
y=
4
−1
x+c.......(1)
Now, the above line passes through the point (−4,−3)
⇒−3=
4
−1
×(−4)+c
⇒c=−4
Therefore required line is 4y+x+16=0 (Substitute
′
c
′
in (1) and simplify)
An inequality is shown. Select all the values of n that make the inequality true.
2/3n≥3/2
plss helppp
Answer:
n≥9/4
Step-by-step explanation:
Times both sides by 3/2
(3/2)(2/3)n≥(3/2)(3/2)
Note that because 3/2 is positive ( > 0) we don't flip the inequality's direction.
n≥9/4
7 cm
10.5 cm
13 cm
Your Turn!
3 m
15 m
11 m
5m
Answer: number 1 . 6688.5 then rounded is 6689.
Number 2. 2475
Step-by-step explanation:
help pls
Find the volume of the composite solid.
Answer:
80cm3
Step-by-step explanation:
volume of the composite solid=volume of the
pyramid+
volume of the
cuboid
volume of the pyramid=1/3* base area*height
=1/3*5*4*6
=40cm3
volume of the cuboid=base area *height
=5*4*2
=40cm3
volume of the composite solid=40cm3+40cm3
=80cm3
The graph shows your elevation during a bike ride. Which statement is true about your bike ride?
Answer:
You were running downhill for the first 15 minutes.
In a triangle with all sides equal, what is the degree measure of any of the
angles? Write one number. *
answer:
the degree measure would be 60°
60 + 60 + 60 = 180
therefore, 60 is the answer.
What are two fractions equivalent to 2/8?
Hm, any two? 1/4 and 4/16 are equal to 2/8.
Hope this helps.
help pleaseeeeeee!!!!!!
Answer:
5x + 100
Step-by-step explanation:
(2x + 6) x 2 = 4x + 12
14x + 8 - 4x + 12 =
10x + 20 / 2 =
5x + 100
Hope that helps!
120g:5kg in simplest form
Can you help me with this linear equation?
Find x:
-8x+7=4
Answer:
[tex] \tt \: - 8x + 7 = 4 \\ \tt \: - 8x = 4 - 7 \\ \tt \: - 8x = - 3 \\ \tt \: x = \frac{3}{8} [/tex]
Select the statement that describes this expression: 32 ÷ 4 + ( fraction 1 over 2 x 16) − 2
Answer:
Step-by-step explanation:
32 ÷ 4 + ([tex]\frac{1}{2}*16) - 2[/tex] = 8 + (1*8) - 2
= 8 + 8 - 2
= 16 - 2
= 14
Answer:
The quotient of 32 and 4 added to the product of fraction 1 over 2 and 16, then subtract 2
Step-by-step explanation:
a. [(-28)-(+42)] - (-13)
Answer:
= -57 is answer
Step-by-step explanation:
−28−42−(−13)
have a good day!
An angle measures 154º more than the measure of its supplementary angle. What is the
measure of each angle?
Answer:
167 & 13
Step-by-step explanation:
(180-154)/2=
26/2=13
154+13=167
Jerome won the lottery! He donated 1/2 of the money to charity and gave his parents 1/6 of the winnings. The remaining 1/3 was divided equally among his 5 friends. The expression given represents the part of the lottery money for each friend received. "1/3 (divided by) 5" Which expression is equivalent to the amount of money each friend received? A: 1/5 (divided by) 1/3 B: 1/5 x 1/3 C: 1/3 (divided by) 1/5 D: 5/1 x 1/3
Answer:
B: 1/5 x 1/3
Step-by-step explanation:
2. What is an interest that is computed on the
principal and then added to it?
A. Simple Interest
B. Compound Interest
C. Interest
D. Principal
Answer:
Step-by-step explanation:
A small theater head six rows of 26 chairs each an extra seven chairs have just been brought in how many chairs are in the theater now
The time to complete a project varies inversely
with the number of employees. If 3 people can
complete the project in 7 days, how long will it
take 5 people?
O 4.2
O 21
O 11.7
O 2.1
Answer:
4.2
Step-by-step explanation:
T = K/N
K= TN
= 3×7
K= 21
Therefore the time required for 5 employees can be calculated as follows
T= 21/5
= 4.2
Using only addition what is 20 - 9 + 8 -7
Answer:
12
Step-by-step explanation:
Answer: 12
Step-by-step explanation:
I don't know if you mean using the Complements Method but I really wouldn't recommend using this method for all problems unless your teacher asked you to specifically.
Here is how to:
1. take the "complement" of the number we are subtracting (The "complement" is the number to add to make 10 (or 100, 1000, etc, depending on how many digits we have)
2. add it to to the number we are subtracting from
3. discard the extra "1" on the left
If you mean to do it mentally, think about it like this:
20 + (-9) = 11 You are essentially adding negative nine to twenty, not subtracting nine. If you want to see this better, try using a number line. When you add a negative number, you move to the left on the number line.
Same thing with 8 + (-7) = 1
You are adding negative seven to eight.
All that is left to do is adding both of the results together, and you get twelve.
11 + 1 = 12
Which answer is an equation in point-slope form for the given point and slope?
Point (1, 9), Slope: 5
(A) y - 9 = 5(x + 1)
(B) y+9 -5(x - 1)
(C) y-9=5(x - 1)
(D) y-1-5(x +9)
Answer:
Step-by-step explanation:
Point-slope equation for line of slope m that passes through (x₀,y₀):
y-y₀ = m(x-x₀)
In your case, m=5 and (x₀,y₀)=(1,9):
y-9 = 5(x-1)
What is the value of x in the equation shown below.
0.25x + 7 = 4(x - 2)
Answer:
x=4
Step-by-step explanation:
0.25x+7=4(x−2)
Use the distributive property to multiply 4 by x−2.
0.25x+7=4x−8
Subtract 4x from both sides.
0.25x+7−4x=−8
Combine 0.25x and −4x to get −3.75x.
−3.75x+7=−8
Subtract 7 from both sides.
−3.75x=−8−7
Subtract 7 from −8 to get −15.
−3.75x=−15
Divide both sides by −3.75.
x=-15/-3.75
Expand -15/-3.75 by multiplying both numerator and the denominator by 100.
x=-1500/-375
Divide −1500 by −375 to get 4.
x=4
what is the slope of the line passing though the points (-3, 4) and (4, -1)
Answer:
[tex]\displaystyle m=\frac{-5}{7}[/tex]
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightAlgebra I
Coordinates (x, y)Slope Formula: [tex]\displaystyle m=\frac{y_2-y_1}{x_2-x_1}[/tex]Step-by-step explanation:
Step 1: Define
Point (-3, 4)
Point (4, -1)
Step 2: Identify
x₁ = -3, y₁ = 4
x₂ = 4, y₂ = -1
Step 3: Find slope m
Simply plug in the 2 coordinates into the slope formula to find slope m
Substitute in points [Slope Formula]: [tex]\displaystyle m=\frac{-1-4}{4--3}[/tex][Slope] Simplify denominator [Fraction]: [tex]\displaystyle m=\frac{-1-4}{4+3}[/tex][Slope] Subtract/Add [Fraction]: [tex]\displaystyle m=\frac{-5}{7}[/tex]true or false. the cross section of a rectangular prism is a prism
Answer:
true
Step-by-step explanation:
at what rate of compound interest per annum will a sum of rupees 2500 become rupees 2500 in 2 years
Answer: 2500 for 2 years at 4 per cent per annum , compound intrest being reckoned semi-annually.
