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My name is Ann [436]
3 years ago
7

Hellpppp ASAP. Plzzzz

Mathematics
2 answers:
padilas [110]3 years ago
8 0

Answer:

6 is from the beginning. Multiply first, not add

Step-by-step explanation:

Shalnov [3]3 years ago
8 0

Answer:

6)

5+3(y-4)=5(y+2)-y\\\\5+3y-12=5y+10-y\\\\-7+3y=4y+10\\\\y=-17

The error was made by combining the 5+3(y-4) without first distributing the 3 to both the y and -4.

7)

a)

A(t)=0.30t+45\\B(t)=0.25t+60

b) Now we can set each equal to 150 and solve for t

150=0.30t+45\\\\0.30t=105\\\\t=\frac{105}{0.30} \\\\t=350

Rob can send 350 texts per month with plan A

150=0.25t+60\\\\0.25t=90\\\\t=\frac{90}{0.25} \\\\t=360

Rob can send 360 texts per month with plan B

c)

A(100)=0.30(100)+45\\\\A(100)=30+45\\\\A(100)=75

B(100)=0.25(100)+60\\\\B(100)=25+60\\\\B(100)=85

If Rob were to send 100 text messages a month, Plan A would be cheaper

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CAN SOMEONE SOLVE THIS PLEASE<br> −4x−(x−1)=3(x−5)
tatuchka [14]

Answer: x = 2

Hope this helps!

8 0
3 years ago
Read 2 more answers
A jet ski rental charges A flat rate of $75 ,plus an additional $60 per hour you want to spend less than $200. for how many hour
cluponka [151]
The equation to solve would be setting

60×- the m plus 75,the b set to 200 the maximum that's wanted to be used. the equation will look like this

200=60x+75

-75. -75

125=60x
125/60 60x/60

2.08=x

and since you cant round the time the answer will be left at 2
8 0
3 years ago
The United States government used to make coins of many different values
Papessa [141]

Answer:

1. 50%

2. 3%

3. 20%

4. 200%

Step-by-step explanation:

Here, we want to find the worth of each coin as a percentage of $1

We simply divide the worth by $1 and multiply by 100%

$1 is same as 100 cents

Thus;

1. 50 cent

= 50/100 * 100% = 50%

2. 3 cents

= 3/100 * 100% = 3%

3. 20 cents

= 20/100 * 100% = 20%

4. $2

= 2/1 * 100% = 200%

5 0
2 years ago
Imagine there are 5 cards. They are colored red, yellow, green, white, and black. You mix up the cards and select one of them wi
iragen [17]

Step-by-step explanation:

step one:

given that the sample space is

red, yellow, green, white, and black. i.e (1+1+1+1+1)= 5

the sample size is 5

the probability of picking a colored card at random is

Pr(a colored card)= 1/5

step two:

without replacement, after the first event, the sample size is now 4

then the probability of picking a colored card at random is

Pr(a colored card)= 1/4

5 0
3 years ago
Evaluate the triple integral. 5x dv, where e is bounded by the paraboloid x = 7y2 + 7z2 and the plane x = 7. e
Mrac [35]

Convert to cylindrical coordinates:

x=x

y=r\cos\theta

z=r\sin\theta

Then E is the set of points (r,\theta,x) such that 0\le r\le1, 0\le\theta\le2\pi, and 7y^2+7z^2\le x\le7 or 7r^2\le x\le7.

Now

\displaystyle\iiint_E5x\,\mathrm dV=5\int_0^{2\pi}\int_0^1\int_{7r^2}^7xr\,\mathrm dx\,\mathrm dr\,\mathrm d\theta=\boxed{\frac{245\pi}3}

4 0
3 years ago
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