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3 years ago

Which system of equations has no solutions

Mathematics

2 answers:

Delvig [45]3 years ago

7 0

Step-by-step explanation:

linear equation has no solution

Liono4ka [1.6K]3 years ago

5 0

Answer:

Since parallel lines never cross, then there can be no intersection; that is, for a system of equations that graphs as parallel lines, there can be no solution. This is called an "inconsistent" system of equations, and it has no solution.

Step-by-step explanation:

brainliest plss

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What is the area of a rectangle that is 2/5 inches long and 1/2 inches wide?

Sladkaya [172]

Answer:

Step-by-step explanation:

1/2x2/5=2/10

multiply both denominators by each other, then with numerator.

6 0

3 years ago

Read 2 more answers

H is 60% of m. Also, r is 75% ofm. Work out h as a percentage of r.

ivolga24 [154]

Answer:

h=0.6m

r=0.75m

h=0.6m/0.75m*100 percent of r.

h=6000/75% of r

h=80% of r

Step-by-step explanation:

6 0

3 years ago

In a sample of 388 people in a certain, 22% had red hair. Find a 99% confidence interval for the proportion of people in the cou

Anit [1.1K]

Answer: (0.1658, 0.2742)

Step-by-step explanation:

Formula to find the confidence interval for population proportion is given by :-

$\hat{p}\pm z^*\sqrrt{\dfrac{\hat{p}(1-\hat{p})}{n}}$

, where n= sample size

z*= Critical value

$\hat{p}$ = sample proportion.

As per given , we have

Significance level : $\alpha=1-0.99=0.01$

According to z-table, Critical value for 99% confidence interval : z*=2.576

Let p be the proportion of people in the country that have red hair.

n= 388

$\hat{p}=0.22$

Now, required confidence interval for proportion of people in the country that have red hair will be :-

$0.22\pm (2.576)\sqrt{\dfrac{0.22(1-0.22)}{388}}$

$0.22\pm (2.576)\sqrt{0.000442268}$

$0.22\pm (2.576)(0.02103)$

$(0.22-0.05417328,\ 0.22+0.05417328 )=(0.16582672,\ 0.27417328)\\\\\approx(0.1658,\ 0.2742)$

The 99% confidence interval for the proportion of people in the country that have red hair= (0.1658, 0.2742)

8 0

3 years ago

Dr. Ellison says that the equation y = 17x + 1 has a solution of (1,18).

nekit [7.7K]

The solution of an equation is the true value of the equation.

The true statement is (a) Dr. Ellison is right

The equation is given as:

$\mathbf{y =17x + 1}$

The solution is given as: (1,18)

Substitute 1 for x and 18 for y.

So, we have:

$\mathbf{18 =17 \times 1 + 1}$

Multiply

$\mathbf{18 =17 + 1}$

Add

$\mathbf{18 =18}$

The above equation is true.

Hence, the true statement is (a) Dr. Ellison is right