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faltersainse [42]
3 years ago
14

5x + 2y = -10 Graph the equation

Mathematics
1 answer:
mars1129 [50]3 years ago
7 0

Answer:

Desmos graphing calculator is a very helpful tool!

5x+2y=10

Step-by-step explanation:

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Which equation can be used to solve the following word problem? Seth has 8 more nickels than dimes, and the total value of his c
9966 [12]

Answer:

Seth has 21 nickels

Step-by-step explanation:

Let n represent the number of nickels. Since Seth has 8 more nickels than dimes, then (n-8) is the number dimes.

Nickel is worth 5 cents and dime is worth 10 cents.  Thus, n nickels are worth 5n cents and (n-8) dimes are worth 10(n-8) cents. The total value of Seth's coins is $2.35 that is 235 cents, then

5n+10(n-8)=235.

Solve this equation:

5n+10n-80=235,\\ \\15n=235+80,\\ \\15n=315,\\ \\n=21.

6 0
3 years ago
The expected number of typographical errors on a page of a certain magazine is .2. What is the probability that an article of 10
Pavel [41]

Answer:

a) The probability that an article of 10 pages contains 0 typographical errors is 0.8187.

b) The probability that an article of 10 pages contains 2 or more typographical errors is 0.0175.

Step-by-step explanation:

Given : The expected number of typographical errors on a page of a certain magazine is 0.2.

To find : What is the probability that an article of 10 pages contains

(a) 0 and (b) 2 or more typographical errors?

Solution :

Applying Poisson distribution,

N\sim Pois(0.2)

P(N=r)=\frac{e^{-np}(np)^r}{r!}

where, n is the number of words in a page

and p is the probability of every word with typographical errors.

Here, n=10 and E(N)=np=0.2

a) The probability that an article of 10 pages contains 0 typographical errors.

Substitute r=0 in formula,

P(N=0)=\frac{e^{-0.2}(0.2)^0}{0!}

P(N=0)=\frac{e^{-0.2}}{1}

P(N=0)=e^{-0.2}

P(N=0)=0.8187

The probability that an article of 10 pages contains 0 typographical errors is 0.8187.

b) The probability that an article of 10 pages contains 2 or more typographical errors.

Substitute r\geq 2 in formula,

P(N\geq 2)=1-P(N

P(N\geq 2)=1-[P(N=0)+P(N=1)]

P(N\geq 2)=1-[\frac{e^{-0.2}(0.2)^0}{0!}+\frac{e^{-0.2}(0.2)^1}{1!}]

P(N\geq 2)=1-[e^{-0.2}+e^{-0.2}(0.2)]

P(N\geq 2)=1-[0.8187+0.1637]

P(N\geq 2)=1-0.9825

P(N\geq 2)=0.0175

The probability that an article of 10 pages contains 2 or more typographical errors is 0.0175.

6 0
3 years ago
A washer and a dryer cost $744 combined, the washer costs $94 more than the dryer, what is the cost of the dryer?
sp2606 [1]
Answer: 325$

Explanation:
Assume: A is the cost of washer
And B is the cost of dryer

A+B = 744
And: A = B + 94$
We get:

B + 94$ + B = 744
2B + 94 = 744
2B = 650
B = 325
3 0
3 years ago
Read 2 more answers
Evaluate a - b + c for a = 4 1/5,b =2 7/20, and c= 3 1/4
gavmur [86]

Answer:

5 1/4

Step-by-step explanation:

4 1/5 - 2 7/20 + 3 1/4

Common denominator = 20.

4 4/20 - 2 7/20 + 3 5/20

7 12/20 - 2 7/20 = 5 5/20 = 5 1/4

8 0
3 years ago
GOOD AT GEOMETRY? COME TAKE THESE EASY POINTS. 10 POINTS FOR WHOEVER GETS IT RIGHT AND BRAINLIEST!!
astraxan [27]

Answer: T_8, _4 (Choice 1)

Step-by-step explanation:

3 0
3 years ago
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