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3 years ago

Simplify 1) 7x+5-4x-16 2) 5(1-4x)+2x-40

Mathematics

1 answer:

stich3 [128]3 years ago

6 0

Answer:

-35-18x

Step-by-step explanation:

just calculate the difference

-35-20x+2x

-35-18x

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Liza's cousin Marie bought her a ring for 250 euros in France. Liza wants to pay Marie for it in U.S. dollars. If the foreign ex

EleoNora [17]

Answer:

416.67 dollars

Step-by-step explanation:

the exchange rate between U.S. dollar and euro is given as

Exchange rate = 1:0.6

1 U.S. dollar /1 euro = 0.6

cross-multiplying both side

1 x 1 U.S. dollar = 0.6 x 1 euro

1 U.S. dollar = 0.6 euro

multiplying both side by 10

10 U.S. dollar = 0.6 x 10 euro

10 U.S. dollar = 6 euro

dividing both side by "6"

10 U.S. dollar/6 = 6 euro/6

(10/6) U.S. dollar = 1 euro

1 euro = (10/6) U.S. dollar

the ring was bought for 250 euros , we need to convert 250 euros in dollars.

multiplying both side by 250

250 x 1 euro = (250 x 10/6) U.S. dollar

250 euro = 416.67 U.S. dollar

so liza should pay 416.67 U.S. dollar to marie.

4 0

2 years ago

Solve the following inequality for w then simplify <br> -w+9>6w+8

Alla [95]

Answer:

$\displaystyle (-\infty,\frac{1}{7})$

Step-by-step explanation:

<u>Inequalities</u>

To solve the inequality:

$-w+9>6w+8$

We need to perform the required operations on both sides of the inequality to have the variable w isolated.

First, we subtract 9:

$-w+9>6w+8$

$-w>6w+8-9$

Subtracting 6w:

$-w-6w>+8-9$

Operating:

-7w>-1

Now we divide by -7 but recall that when dividing by a negative number, we must flip the inequality sign:

$\displaystyle w$

Operating:

$\displaystyle w$

Solution:

$\mathbf{\displaystyle (-\infty,\frac{1}{7})}$

4 0

3 years ago

Does 3+ mean 3 and up or more than 3? This is a stupid question, but I don't remember lol

gregori [183]

3+ means 3 and up hope i could help.

6 0

3 years ago

Read 2 more answers

The difference between an observational study and an experiment is that

lorasvet [3.4K]

Answer:

I think it's the last one! In an experiment, one group is studied over a short period of time---

7 0

2 years ago

Indiana is hiking at a rate of 5 miles per hour. At this rate, how long will it take her to hike 22 miles?

Pie

$v =\dfrac{d}{t}$

$5 = \dfrac{22}{t}$

$t = \dfrac{5}{22}$

She will take $\dfrac{5}{22}$ hours or 13 minutes and 38 secs.

8 0

3 years ago