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1 year ago

8. Erin has a number of pens. James has 4 times as many pens as Erin. Together they have 35 pens. How many does

Mathematics

2 answers:

Assoli18 [71]1 year ago

6 0

Answer:

Erin has 7 pens and James as 28 pens.

Step-by-step explanation:

Let e = the number of Erin's pens

Let j = the number of James' pens

e + j = 35 j = 4e

substitute in 4e for j in the first equation above.

e + j = 35

e + 4e = 35

5e = 35 Divide both sides by 5

e = 7 Plug 7 in for e in either equation above.

j = 4e

j = 4(7)

j = 28

natulia [17]1 year ago

4 0

Answer:

Erin has 8.75 pens or just 9 pens

Step-by-step explanation:

35÷4= 8.75 then round

then to cheak your answer you would do 8.75×4= 35.

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3 years ago

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2 years ago

A stone is thrown vertically upward from a platform that is 20 feet high at a rate of 160 ft/sec. Using the quadratic function h

Illusion [34]

Answer:

5 seconds

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Step-by-step explanation:

Step 1: Know when the stone reaches the maximum height

We know the maximum or minimum height of a parabola is at the vertex so we need to find the vertex

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Step 3: We know the t coordinate we can find the height at that time

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3 years ago

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3 years ago

A cabbage palmetto has a height of 80 feet. what is the approximate height of the tree in meters?

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