Mathematics College

the sum of the first four terms of an A.p is 62.if the difference between 4 terms and 2nd terms is 14. find the first term and common difference​

Answers

Answer 1

Answer:

-2 -4 -6 -8

Step-by-step explanation:

I got the answer off of khan academy

Related Questions

A sample of 68 college students yields a mean annual income of $3248 and a standard deviation of $885. Find the margin of error in estimating μ at the 99% level of confidence.

Answers

Answer:

 can put this solution on YOUR website!

margin of error is t(0.995 df=67)*s/sqrt(n)

t=2.65

the margin of error is 2.65*885/sqrt(68)=$284.40

Suppose y varies directly with x. Write an equation relating x and y.
y = -22.5 when x = 15
a.
b.
y = -0.75x
2
y=-3
c. y=-1.5x
d. y = 1.5x

Answers

It’s 10 by 2 but the integers should be 12 and the ans should be 11.


The product of two numbers is 75
one of the two numbers is a perfect squar. The other is a prime number. Find the sum of the two numbers.

Answers

Answer: 8

Step-by-step explanation: numbers are 5 and 3.

5²·3 =75

Find the indicated side of the
right triangle.
60°
х
7
30°
x = [?]
Enter

Answers

Here's the solution,

By using Trigonometry :

=》

[tex] \sin(30) = \dfrac{7}{x} [/tex]

=》

[tex] \dfrac{1}{2} = \dfrac{7}{x} [/tex]

=》

[tex]x = 14[/tex]

hence, the value of x = 14 units

Answer:

14

Step-by-step explanation:

PLEASE HELP
What is the slope of the line shown below? (Enter your answer as a decimal if
necessary.)
(1, 2)
(-1, -4)

Answers

Answer:

-4-2/-1-1=-6/-2= 3

So the answer is 3

One-third of the candidates for a job were 25 years old or younger. Two-sevenths of the candidates were at least 50 years old. If 84 people applied for the job, how many were between 25 and 50?

Answers

Answer:

1/3 * 84 = 28 were under 25

2/7 * 84 = 24 were at least 50

28 + 24 = 52

84-52 = 32 were between 25 and 50

Step-by-step explanation:

13.) In 1990, a radio costs $25. Now,
the radio costs $5. What is the
percent of change?

Answers

Answer:

Step-by-step explanation:

             80% of 25 = 5

because 10% of 25 = 2.5

and then       10 x 8 = 80

so                2.5 x 8 = 20

                  25 - 20 = 5

therefore, the percentage change is 80%

GIVE BRAINLIEST

hope this helped,

-cheesetoasty

A car is running with the velocity of 72km/h . what will be its velocity after 5s if its acceleration is -2m/s square ?

​

Answers

Answer:

92 km

Step-by-step explanation:

by calculator hope it gelps

92km because that’s what i found in my calculations

Find the measure of 43.
43
75
43 = [?]

Answers

Answer:

<3=105°

Step-by-step explanation:

The angle directly to the right of the 75° angle is 105°, as the angles along a straight line add to 180.

<3=105° because they are corresponding angles

Answer:

Solution given:

<3+75=180[co- interior angle]

<3=180°-75°=105°

<3=105°

Danielle has a $30 gift card to T-Shirt-paradise . She wants to use it to buy a rock band T-shirt and a glitter T-shirt. The rock band T-shirt costs $11.95. Let x represent how much Danielle can spend on a glitter T-shirt using her gift card.

Answers

x= $18.05. Hope this helps! can i please get brainliest

x+11.95≤30

Then x≤30−11.95x≤30−11.95

x≤18.05x≤18.05Answer:

Step-by-step explanation:

jamal wants to draw a right triangle and label it JKL​

Answers

The answer is B: (-4,-2)

Answer:

Calm down jamal don't go pulling out the nine

Step-by-step explanation:

this is just a joke

A set of data is summarized by the stem and leaf plot below.

Stem ​Leaf
1 1 2 3 4 4 5 5 7 8 8 9 0 1 2
2 4 6 8 9 9 0 3 4
3 4 4 4 6 7 7 8 9

Provide your answer below:
There are __________ values in the data set which are greater than or equal to 20 and less than or equal to 29. There are _____________ values in the data set which are greater than or equal to 30 and less than or equal to 39. There are ___________ values in the data set which are greater than or equal to 10 and less than or equal to 19.

Answers

Answer:

30 values ; greater than or equal to 10 and less Than or equal to 39

Step-by-step explanation:

Counting the number of leaves in the plot, we have 30 leaf values. This gives the number of dataset.

The minimum value is the number created by the combination of the least stem value and the lowest leaf value, which is 10

The maximum value is obtained from the combination of the highest stem and leaf value. The highest value is 39

A plataform is made of two rectangular prisms

Answers

Answer:

12 cubic meters

Step-by-step explanation:

Large - 4x3x2=24

Small - 2x3x2=12

24-12=12

2. The rectangles below are similar. Solve for the AREA of the larger rectangle. *

Answers

Where are the rectangles I can’t seem them

A triangle has an area that is 125 m2. The measure of the base is 20 m so, h = ? m.

Answers

Answer:

12.5

Step-by-step explanation:

12.5 multiplied by 20 is 250 which you divide by 2 to get the area. it plugs in to the triangle area formula which is 1/2 base times height.

Answer:

Hello! answer: h = 12.5

Step-by-step explanation:

H = 12.5 because 12.5 x 20 = 250 then we divide by 2 and get our area 125. so h = 12.5

A classroom floor has a perimeter of 132 feet. What is the perimeter in
yards?

Answers

Answer:

44 yards

Step-by-step explanation:

Formula :

divide the length value by 3

YOU GO TO THE STORE WITH $100.  YOU HAVE A LIST OF THINGS TO BUY THAT WILL COST $70 IN TOTAL.  YOU WANT TO BUY OREOS.  OREOS COST $3 A PACK.  HOW MANY PACKS OF OREO COOKIES CAN YOU BUY?
Write an equation and solve this

Answers

Answer:

10

Step-by-step explanation:

First, you would subtract 100-70 to get 30

Then, you would do 30/3 to learn that you could still buy 10 packs of Oreos with the remaining money.

Does 23^-1 (mod 1000) exist? If yes solve it.

Answers

Yes, 23 has an inverse mod 1000 because gcd(23, 1000) = 1 (i.e. they are coprime).

Let x be the inverse. Then x is such that

23x ≡ 1 (mod 1000)

Use the Euclidean algorithm to solve for x :

1000 = 43×23 + 11

23 = 2×11 + 1

→   1 ≡ 23 - 2×11   (mod 1000)

→   1 ≡ 23 - 2×(1000 - 43×23)   (mod 1000)

→   1 ≡ 23 - 2×1000 + 86×23   (mod 1000)

→   1 ≡ 87×23 - 2×1000 ≡ 87×23   (mod 1000)

→   23⁻¹ ≡ 87   (mod 1000)

If y=1/4x and x=-12, find y.

Answers

Answer:

-3 I believe

Step-by-step explanation:

why dose the answer have to be 20+ letters

Answer:

-3

Step-by-step explanation:

To find y, plug in -12 for x in the y=1/4x equation. Multiply -12 by 1/4 (or divide -12 by 4) and you get -3.

HALLPPP DUE TODAY!!!! I RLLY NEED THIS DONE ASAP!! PLS AND THANK YOU!!!!
Find the compound interest
Principal: $750
Interest Rate: 6% or 0.06 Time: 2 years

Answers

Answer:92.7

Step-by-step explanation:

Use the compound interst formula: A= P(1+r)^n

750(1+.06)^2=842.7

Now substract the principal to find the compound interest : 842.7-750= 92.7

Hope it helps

750(1+.06) to the power of 2
= 842.7 - total
= 92.7 - interest

Will give brainlst!!

Have a amazing day :)
Pls help

Answers

Answer:

Sorted Data Set: 2, 10, 12, 13, 14, 15, 17, 18, 18, 20, 21

Mean (Average) 14.545454545455

Median 15

Range 19

Mode 18, appeared 2 times

Geometric Mean 12.803503609558

Largest 21

Smallest 2

Sum 160

Count 11

First Quartile Q1 = 12

Second Quartile Q2 = 15

Third Quartile Q3 = 18

Interquartile Range IQR = 6

Please see attached pic

Answers

the answer is D!
hopefully this helps

help please!!!!!!!!!!!!!!!!!!! very important

Answers

Answer:

i got B for my answer

Find the value for x

Answers

Answer:

x=4

Step-by-step explanation:

The two angles together are complementary, which means they add up to 90 degrees

solving for x:

9x+4x+38=90

9x+4x=13x

13x+38=90

13x+38-38=90-38

13x=90-38

13x=52

x=4

hope this helps ^D^

Answer:

9x=4x+38

5x=38

x=38/5

Step-by-step explanation:

which is a graph of the equation y = 2x - 4

Answers

The third graphThe graph has a slope of 2and a y-intercept of -4

Answer:

The 3rd one

Step-by-step explanation:

Change the decimal to a percent. 1.3=

Answers

Answer:

Im pretty sure its 130%

Step-by-step explanation:

.013% I think you move the decimal to the left

A crowd-sourced review platform believes that more and more customers are writing reviews online. The crowd-sourced review platform would like to test the claim that the percent of customers who leave a review online is greater than 72%. They decide to complete a hypothesis test at a 1% significance level. They sample 30 customers, and determine the sample percent to be 90%. The following is the data from this study: Sample size =30 customers Sample proportion =0.90 Identify the null and alternative hypothesis for this study by filling in the blanks with the correct symbol (=,≠,<, or > to represent the correct hypothesis.)

Answers

Answer:

H0 : P = 0.72

H1 : P > 0.72

Step-by-step explanation:

Claim is to test that percentage of customers who leave a review is greater than 72%

From the information given :

P0 = 72/100 = 0.72

The null hypothesis, H0 : P = 0.72

Alternative hypothesis claims the proportion is greater than 0.72 and from the sampling result obtained, phat = 0.90

Hence,

Alternative hypothesis, H1 : P > 0.72

The more experiments that are performed, the closer the experimental probability gets to the theoretical probability: true or false?

Answers

Answer:

True.

Explanation:

The more experiments that are performed, the more data can be collected.

Can someone help me with this question plz Show work.

Answers

Answer:

D. 32.3

Step-by-step explanation:

Length-a  

Width-b

A=ab=6.8×4.75=32.3

What are the coordinates of point A I will mark brainliest​

Answers

Answer:

the answer would be A: -1 1/4, 3/4

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