Pls help....................

Answers

Answer 1

Answer: $b^2+6b=0\nb(b+6)=0\nb=0 \vee b=-6\n\n5x^2-5x=0\n5x(x-1)=0\nx=0 \vee x=1\n\n-10x+35x=0\n25x=0\nx=0\n\n2x+15x=0\n17x=0\nx=0\n\n18x^2+6x=0\n6x(3x+1)=0\nx=0 \vee x=-(1)/(3)\n\n-32x^2-24x=0\n-8x(4x+3)=0\nx=0 \vee x=-(3)/(4)$

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For $7.52, you purchased 8 pens and highlighters from a local bookstore. Each highlighter costs $1.09 and each pen costs $.69. How many pens did you buy.

Answers

p=number of pens
h=number of highlighters

p+h=8

1.09h+0.69p=752

p+h=8
minus h from both sides
p=8-h

sub that for p

1.09h+0.69(8-h)=7.52
1.09h+5.52-0.69h=7.52
0.4h+5.52=7.52
minus 5.52 from both sides
0.4h=2
divide both sides by 0.4
h=5

sub back

h=8-p
5=8-p
minus 8 frm both sides
-3=-p
mltiply both sides by -1
3=p

3 pens you bought

Let p be the number of pens purchased and h be the number of highlighters purchased.
p + h = 8 ..........(1)
h = 8 - p ...........(2)
0.69p + 1.09h = 7.52 ........(3)
Plugging the value for h from (2) into equation (3) we get:
0.69p + 1.09(8 - p) = 7.52 .....(4)
Expanding the bracket in (4) gives:
0.69p + 8.72 - 1.09p = 7.52
Therefore
-0.4p = -1.2
p = -1.2/-0.4 = 3
The answer is 3 pens.

The double number line shows that Faye can sort 150150150 recyclable items in 333 minutes. Based on the ratio shown in the double number line, how many recyclable items can Faye sort in 444 minutes?

Answers

Answer:

200200200

Step-by-step explanation:

150150150: 333 = x : 444

x = 150150150 x 444 / 333 = 200200200

Answer:

200 just 200 and only put 200

PLZ HELP ME!
The problem is down below...

Answers

See this is real simple my friend.. See, the answer is 288

a Base side= 6
b Base side = 8
c Base side= 10
h Height= 12

Formula Volume of a Triangular Prism Is V = $(1)/(2) *a *c *h$

WILL MARK BRAINLIEST Harry had $32. He spent all the money on buying 3 notebooks for $x each and 4 packs of index cards for $y each. If Harry had bought 5 notebooks and 5 packs of index cards, he would have run short of $18. A student concluded that the price of each notebook is $5 and the price of each pack of index cards is $1. Which statement best justifies whether the student's conclusion is correct or incorrect? The student's conclusion is incorrect because the solution to the system of equations 3x + 4y = 32 and 5x + 5y = 50 is (8, 2). The student's conclusion is incorrect because the solution to the system of equations 3x + 4y = 32 and 5x + 5y = 18 is (8, 2). The student's conclusion is correct because the solution to the system of equations 3x + 4y = 32 and 5x + 5y = 18 is (5, 1). The student's conclusion is correct because the solution to the system of equations 3x − 4y = 32 and 5x − 5y = 50 is (5, 1).

Answers

Let x be cost notebook and y be cost of index card
According to first condition
3x+4y=32

According to second comdition
5x+5y=32+15

Solve the two equations

Given that 1 kilogram = 2.2 pounds, which statements are true?Two kilograms is equal to 4 pounds.

Three kilograms is greater than 6 pounds.

Four kilograms is less than 8 pounds.

Five kilograms is equal to 11 pounds.

Answers

Answer:

the second and fourth statements

Step-by-step explanation:

A recipe calls for 2 tsp of butter. Melinda wants to make 40% more servings than the recipe makes.Which expression represents how many teaspoons of butter Melinda should use?
A.
0.6 * 2

B.
1.6 * 2

C.
0.4 * 2

D.
1.4 * 2

Answers

The correct expression to represent the additional 40% serving to the recipe that calls for 2 tsp of butter is:

1.4 * 2 = 2.8 tsp. Choice D.

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