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4 years ago

What are the values of x and y? (Explain please it will help a lot,thanks)

Mathematics

1 answer:

Kitty [74]4 years ago

5 0

X = 80
y = 85

If you look at only the left triangle, you can see that x is part of one of the angles. The 3 interior angles of the triangle add up to 180 degrees, so subtracting the other two angles, you get x + 30 = 110, or x = 80.

The same method can be used for the other triangle to find y.

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Your school’s band decides to sell cookie dough kits to raise money for a spring field trip. There is a Family Times Cookie Doug

nikitadnepr [17]

Answer:

Step-by-step explanation:

let the Cookie Dough kit be x

and Baker’s Delight kit be y

cost of Cookie Dough kit= $7

cost of Baker’s Delight= $15

x+y=220------------1

7x+15y=2100------2

solve for x and y we have

multiply eqn 1 by 7 and subtract

7x+7y=1540---------3

- 7x+15y=2100-------2

0x-8y=-560

8y=560

divide both sides by 8 we have

y=560/8

y=70

put y=70 in eqn 1 we have

x+70=220

x=220-70

x=150

x=220-70

x=150

A. How many of each type of kit should your band purchase to raise the most money

Cookie Dough kit= 150

Baker’s Delight= 70

B. What is the most money that your band can raise?

Cookie Dough kit profit= selling price-cost price= 12-7= $5

Baker’s Delight profit= selling price-cost price= 25-15= $10

Amount made for Cookie Dough = 150*5=$750

Amount made for Baker’s Delight = 70*10=$700

total= 750+700= $1450

3 0

3 years ago

Perform the operation and write the answer in simplest form. 2 1/5 ÷ 31/5

Vinil7 [7]

<u>Answer:</u>

$\frac{11}{31}$

<u>Step-by-step explanation:</u>

We are given the following expression and we are to perform operation and write the answer in simplest form:

$\frac { 2 \frac { 1 } { 5 } } { \frac { 31 } { 5 } }$

Changing the mixed fraction into improper fraction:

$2\frac{1}{5}$ ---> $\frac{11}{5}$

Now simplifying it:

$\frac { \frac { 1 1 } { 5 } } { \frac { 31 } { 5 } }$

Changing the division sign to multiplication by taking the reciprocal of the denominator:

$\frac{11}{5} \times \frac{5}{31}$

$\frac{11}{31}$

5 0

3 years ago

Read 2 more answers

The number of chocolate chips in a popular brand of cookie is normally distributed with a mean of 22 chocolate chips per cookie

MA_775_DIABLO [31]

Answer:

The cutoff numbers for the number of chocolate chips in acceptable cookies are 16.242 and 27.758

Step-by-step explanation:

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

$\mu = 22, \sigma = 3.5$

Middle 90%

Between the 50 - (90/2) = 5th percentile to the 50 + (90/2) = 95th percentile.

5th percentile:

X when Z has a pvalue of 0.05. So X when Z = -1.645.

$Z = \frac{X - \mu}{\sigma}$

$-1.645 = \frac{X - 22}{3.5}$

$X - 22 = -1.645*3.5$

$X = 16.242$

95th percentile:

X when Z has a pvalue of 0.95. So X when Z = 1.645.

$Z = \frac{X - \mu}{\sigma}$

$1.645 = \frac{X - 22}{3.5}$

$X - 22 = 1.645*3.5$

$X = 27.758$

The cutoff numbers for the number of chocolate chips in acceptable cookies are 16.242 and 27.758

3 0

3 years ago

Read 2 more answers

Two weeks in a row, the golf course hosts a group of golfers. The second week had 10 more golfers than the first week. Use the d

makkiz [27]

Answer:

The second week had 10 more golfers than the first week.

Step-by-step explanation:

The graph clearly shows that the second week golfer are more than the first week. The median for week 2 is greater than the median of week 1. The graph of week 2 shows that number of golfers had increased and their age is between 60 to 80 years of age. The median of week 2 is 79 where as median of week 1 is 75.

8 0

4 years ago

‼️ PLEASE HELPPPP ‼️

trapecia [35]

Answer:

blank 1- 2304

blank 2- 2736

Step-by-step explanation:

hope it helps

4 0

3 years ago