Answer:
1 3/10
Step-by-step explanation:
3 7/10 - 2 2/5 =
3 7/10 - 2 4/10 =
1 3/10
Answer:
1 3/10
Step-by-step explanation:
Change the denominator of 2 2/5 to 10 to match denominators by multiplying 2 (numerator and denominator)
New equation: 3 7/10 - 2 4/10 = 1 3/10
A teacher initially plans to take an SRS of size 50 from his large high school and calculate the sample mean x bar of student GPAs. Later, the teacher decides to increase the sample size so that the standard deviation of the sampling distribution of x bar will be half as big as when using a sample size of 50. What sample size should the teacher use?
57
100
150
200
354
Answer:
should be 200 because I think you quadrupole it and 50 x 4 =200
Step-by-step explanation:
Answer:
The answer is 200. 50 * 4 = 200.
I need help with some math?????????
-14
is the first one, remember 1- (-15) is like 1-15 but the you put the - on the14 so you get-14, hope this helped
please, please help, if you could show work too that would be so appreciated <33
Answer:
go to calculator.net
Step-by-step explanation:
Answer:
60 degrees
Step-by-step explanation:
There is an alternate angle, which would make the other angle on the same horizontal line as x 120 degrees, thus leaving 60 degrees.
The perimeter of triangle ABC is 96. Find the value of x. 4x + 1 2x 3x + 2 perimeter of ABC = 96
Answer:
4.5is answer
Step-by-step explanation:
perimeter of ABC = 96
4x + 1 2x 3x + 2=96
21x=96
x=96/21=4.5
Heather invests $3572 in a retirement account with a fixed annual rate of 5% compounded 4 times per year what will the account balance be after 16 years
Answer:
$7910.3
Step-by-step explanation:
Given data
P=$3572
n=4
T=16 years
R= 5%
The compound interest is expressed as
A= P(1+r/n)^nt
Substitute
A=3572(1+0.05/4)^16*4
A=3572(1+0.0125)^64
A=3572(1.0125)^64
A=3572*2.21453241061
A=$7910.3
Given right triangle ABCABC with altitude \overline{BD} BD drawn to hypotenuse ACAC. If BC=10BC=10 and DC=5,DC=5, what is the length of \overline{AC}? AC ?
Answer: [tex]\overline{AC}=[/tex] 12.5
Step-by-step explanation: The triangle ABC and its altitude [tex]\overline{BD}[/tex] is represented in the figure below.
Altitude is a segment of line that link a vertex and the opposite side, forming a right angle.
So, because of [tex]\overline{BD}[/tex], now we have two similar triangles, which means that ratios of corresponding sides are equal:
[tex]\frac{\overline{BD}}{\overline{BC}} =\frac{\overline{AD}}{\overline{BD}}[/tex]
[tex]\overline{BD}^{2}=\overline{BC}.\overline{AD}[/tex] (1)
This is always true for a right triangle and a altitude drawn to the hypotenuse.
Triangle BDC is also right triangle. So, we can use Pythagorean theorem to determine the missing side.
[tex]\overline{BC}^{2}=\overline{CD}^{2}+\overline{BD}^{2}[/tex]
[tex]\overline{BD}^{2}=\overline{BC}^{2}-\overline{CD}^{2}[/tex] (2)
Substituting (2) into (1):
[tex]\overline{BC}^{2}-\overline{CD}^{2}=\overline{BC}.\overline{AD}[/tex]
We want to find f, so:
[tex]\overline{AD}=\frac{\overline{BC}^{2}-\overline{CD}^{2}}{\overline{BC}}[/tex]
[tex]f=\frac{10^{2}-5^{2}}{10}[/tex]
f = 7.5
The length of [tex]\overline{AC}[/tex] is
[tex]\overline{AC}=f+5[/tex]
[tex]\overline{AC}=7.5+5[/tex]
[tex]\overline{AC}=12.5[/tex]
The length of the hypotenuse of triangle ABC is 12.5 units.
Answer:
x = 20
Step-by-step explanation:
Nico gives himself $90 a month to spend on fast food. He spends
$30 a week. The graph represents the amount of money Nico
has left after each week.
well if he spends $30 a week the the money should last about 3 weeks. so there wold be 3 weeks worth of money each month. so you can assume that he uses $1080 a year. and he buys fast food for 36 weeks.
HELP ME PLEASE WITH ANY QUESTION
Answer:
1.) -9
2.) 1/3 or 0.3
5.) 4
6.) 2.9
Step-by-step explanation:
I REALLY need help! Solve the inequality. State the solution in inequality notation.
2(3x−4)+14>−2(−3x−5)+4x
Answer:
x<−1
Step-by-step explanation:
Answer:
x < -1
2(3x - 4) + 14 > -2(-3x - 5) + 4x
<=> 6x - 8 + 14 > 2(3x + 5) + 4x
<=> 6x + 6 > 6x + 10 + 4x
<=> 4x + 4 < 0
<=> 4x < -4
<=> x < -1
If you deposit $6000 into an account paying 8% annual interest compounded monthly, how much money will be in the account after 7 years?
Answer:
$10278
Step-by-step explanation:
Given data
P= $6000
R= 8%
T= 7 years
The compound interest formula is
A=P(1+r)^t
substitute
A=6000(1+0.08)^7
A=6000(1.08)^7
A=6000*1.713
A=$10278
20 POINTS AND BRAINLIEST
Answer:
1. 234.57
2.150.79
3. too lazy... lol sorry
Step-by-step explanation:
Armando deposits $3,827 into a bank account paying 2.8% interest,
compounded monthly (12 times per year). How much money will he have in
his bank account after 16 years? PLEASE HELP!!
Answer:
$745,460.8
Step-by-step explanation:
2.8/100 × 3827 = $107.16
monthly = 1/12
[tex]p = \frac{100 \times i}{rt} = \frac{100 \times 107.16}{2.8 \times \frac{1}{12} } = \frac{10716}{0.23} \\ = 46591.3[/tex]
$46,591.3 in 1year
16 years; $46,591.3 × 16 = $745,460.8
Divide. 0.996 ÷ 0.12
Answer:
8.3
Step-by-step explanation:
Answer:
- 0.996 - Percentage increase =
- 0.996 - (12% × - 0.996) =
- 0.996 - 12% × - 0.996 =
(1 - 12%) × - 0.996 =
(100% - 12%) × - 0.996 =
88% × - 0.996 =
88 ÷ 100 × - 0.996 =
88 × - 0.996 ÷ 100 =
- 87.648 ÷ 100 =
- 0.87648 ≈
- 0.88
Step-by-step explanation:
pls brainlsit
i will give brainliest
Find the slope of the line on the graph.
Write your answer as a fraction or a whole
number, not a mixed number or decimal.
Answer:2/6 i might be wrong but whats the answer choices?
Step-by-step explanation:
Answer:
Step-by-step explanation:
You can see that (0,4) and (1,1) are points on the line. Use their coordinates to determine the slope of the line.
slope = (difference of y-coordinates)/(difference of x-coordinates)
= (1-4)/(1-0)
= -3
PLEASE SOMEONE HELP WITH THIS AND EXPLAIN IT!
Answer: x= 11.15
Step-by-step explanation:
Explanation is in the photo attached
3. In ΔABC, AB = 5 inches and BC = 3 inches. Which of the choices represents all possible values for AC, in inches?
Answer:
2< AC<8
Step-by-step explanation:
For a triangle to exits sum of two sides must always be greater than the the third side
⇒ AC< AB+ BC =5+3=8 in
⇒AC<8 in
Also, the difference of the two sides must be smaller than the length of third side
⇒ AC> | AB-BC| = |5-3| =2
AC> 2 in
therefore, we can say 2< AC<8. Hence, AC can takes 3,4,5,6 values
Help me please:( I need it
Answer:
y = 18
Step-by-step explanation:
30² = 24² + y²
900 = 576 + y²
y = [tex]\sqrt{324}[/tex]
y = 18
please help
Which of these describes the equation 3x + 7y = 8?
Select each correct answer.
A function
B. linear
C. nonlinear
D. proportional
E.
When x is 0, y is
F. When y is 2, x is 2 or -2.
According to the linear function concept, the correct answer is:
B. linear
Additionally:
When x = 0, [tex]\frac{8}{7}[/tex].When y = 2, x = -2.What is a linear function?A linear function is modeled by:
[tex]y = mx + b[/tex]
In which:
m is the slope, which is the rate of change, that is, by how much y changes when x changes by 1.b is the y-intercept, which is the value of y when x = 0.In this problem, the function is:
[tex]3x + 7y = 8[/tex]
Placing into standard format:
[tex]7y = 8 - 3x[/tex]
[tex]y = \frac{8}{7} - \frac{3x}{7}[/tex]
Hence it is a linear function.
When x = 0:
[tex]y = \frac{8}{7} - \frac{3(0)}{7} = \frac{8}{7}[/tex]
When y = 2:
[tex]y = \frac{8}{7} - \frac{3x}{7}[/tex]
[tex]2 = \frac{8}{7} - \frac{3x}{7}[/tex]
[tex]8 - 3x = 14[/tex]
[tex]3x = -6[/tex]
[tex]x = -\frac{6}{3}[/tex]
[tex]x = -2[/tex]
You can learn more about linear functions at https://brainly.com/question/25898120
The cost of metal is proportional to the weight of the metal. Martin buys 12 pounds of metal for $33.00. Create an equation that can be used to determine the cost, in dollars, c, for m pounds of metal.
Step-by-step explanation:
First we need to find the unit price33 / 12: 2.75$ per pound
2.75m = c
We can test if this equation works2.75(12) = c
33 = c
Which is correct
Based on the scatter plot which is the best prediction of the number of gallons of water used by this business when the cost of water is $180
Answer:
Step-by-step explanation:
the unit used to measure an angle is called what
Answer:
prokololoy
Step-by-step explanation:
mag aral ka kase wag puro ml
Two coins are tossed and a number cube (dice) is rolled. How many outcomes are
possible?
A. 24
B. 18
C. 12
D. 10
Answer:
C
Step-by-step explanation:
I tried my best, The coin has 2 outcomes and the dice has 6 so 6 times 2 is 12
Ruby had 30 dollars to spend on 3 gifts. She spent 9 7 10 dollars on gift A and 5 2 5 dollars on gift B. How much money did she have left for gift C?
Answer:
$14 9/10
Step-by-step explanation:
Ruby had 30 dollars to spend on 3 gifts. She spent 9 7 10 dollars on gift A and 5 2 5 dollars on gift B. How much money did she have left for gift C?
From the above question,
$30 = Gift A + Gift B + Gift C
She spent 9 7/ 10 dollars on gift A and 5 2/5 dollars on gift B.
$30 = $9 7/10 + $5 2/5 + Gift C
Gift C = $30 - ( $9 7/10 + $5 2/5)
Lowest Common Denominator = 10
Gift C = $30 - $14+(7 + 4/10)
Gift C = $30 - $14+(7 + 4/10)
Gift C = $30 - $14+(11/10)
$30 - $14+(1 1/10)
$30 - $15 1/10
Gift C = $14 9/10
Therefore, the amount of money she had left for gift C is $14 9/10
Which numbers go in the red and blue box to make the same sum(ADDING INTEGERS)!!
Answer:
positive 3 and 7 in the red box and negative 6 and 4 in the blue box hope that helps
What is the equation of the additive relationship represented by this table?
Enter your answer by filling in the box using an integer.
x y
9 5
12 8
Answer:
-1
Step-by-step explanation: hope this helps
Someone plz help me
Answer:
its the second option thats the answer
Solve the system of equations by the substitution method.
X + 8y = 21
3x + 5y = 6
Step-by-step explanation:
the first one if you are solving for x it will be x=21-8y
if you are solving for y it will be y =21/8 - x/8
the second one will be if you are solving for x x = 2 -5y/3
solving for y is y=6/5-3x/5
Divide.Enter the quotient in the simplest form.
7/10 divided by 4/5
Please hurry
convert 2.5t into pounds
Answer:
5000 Pounds
Step-by-step explanation:
I'm pretty sure this is the answer if not I'm honestly sorry.
Answer:
5512 lbs
Step-by-step explanation:
What is the slope of the line with the given equation: 2x + y = 5
Answer:
Using the slope-intercept form, the slope is 2 .
Step-by-step explanation:
Answer:
2
Step-by-step explanation: