Ask question

Ask question

All categories

3 years ago

7

You purchase 5 pounds of apples and 2 pounds of oranges for $9.your friend purchases 5 pounds of apples and 6 pounds of oranges

for $17

1 answer:

sesenic [268]3 years ago

8 0

Apple is a dollar per pound, and orange is 2 dollar per pound.
5a+2o=9
- 5a+6o=17
-4o=-8
-4o/-4=-8/-4
O=2

5a+2(2)=9
5a+4=9
-4 -4
5a=5
5a/5=5/5
A=1

You might be interested in

A dollar bill is worth _____ pennies. When written in decimal format, each penny can be written as ______ of a dollar.

Mkey [24]

One dollar is 100 pennies. In decimal for, each penny can be written as .01
.99 would be 99 cents. One more would make 1.00, or 1 dollar
Your answers are, (100, Hundredth)

4 0

3 years ago

Read 2 more answers

Mileage tests are conducted for a particular model of automobile. If a 98% confidence interval with a margin of error of 1 mile

Llana [10]

Answer: 37

Step-by-step explanation:

Given : Significance level : $\alpha:1-0.98=0.02$

Critical value : $z_{\alpha/2}=z_{0.01}=2.33$

margin of error : E= 1 mile per gallon

Population standard deviation: $\sigma=2.6$ miles per gallon.

We know that when the population standard deviation is known then the formula to find the sample size is given by :

$n=(\dfrac{z_{\alpha/2}\times \sigma}{E})^2$

$n=(\dfrac{(2.33)\times 2.6}{1})^2=36.699364\approx37$ [Round to the next whole number.]

Hence, the required number of automobiles should be used in the test = 37

7 0

3 years ago

3(-4/7) I don’t know how to get the answer

WARRIOR [948]

Answer:

Step-by-step explanation:

if its 3 - 4/7 then it = 2 3/7

if its 3*-4/7 then it = -12/7 = - 1 5/7

7 0

3 years ago

Please help me...........................

malfutka [58]

Answer:

B

Step-by-step explanation: because this negative

4 0

3 years ago

The slope of the line whose equation is 3x - 2y = 4 is 2/3 3/2 -2

7nadin3 [17]

Answer:

3/2

Step-by-step explanation:

The equation 3x-2y=4 can be written in the form of y=mx+c where m is the slope and c is the y intercept.

Therefore

2y=3x-4 and dividing both sides by 2 to have y at the LHS

y=3/2x-2

Therefore, 3/2 represents the gradient/slope

6 0

3 years ago