All categories

3 years ago

Does the point (–1, 5) satisfy the equation y = 7x?

Mathematics

1 answer:

damaskus [11]3 years ago

5 0

Answer:

Step-by-step explanation:

Substitute the x- coordinate into the equation and if the result is equal to the y- coordinate then it satisfies the equation, that is

y = 7(- 1) = - 7 ≠ 5

Then (- 1, 5 ) is not a solution to the equation

You might be interested in

During a clothing store's Bargin Days, the regular price for T-shirts is discounted to $8.25. You have an additional coupon for

kakasveta [241]

Answer:

$p(t) = 8.25t - 5$

b) The cost of 11 T-shirts during bargain days is $85.75

Step-by-step explanation:

We are given the following information in the question:

Discounted cost of one T-shirt = $8.25

Additional off on coupon = $5.00

Let t be the number of T-shirts bought during the bargain days.

a) Then, the price of t T-shirts with the discount applied will be given by the function:

$p(t) = \text{Number of T-shirts}\times \text{Discounted price for 1 T-shirt} - \text{Coupon Off}\\p(t) = 8.25t - 5$

b) Price during Bargain Days for 11 shirts

We put t = 11 in the above function:

$p(t) = 8.25t - 5\\p(11) = 8.25(11) - 5 = 85.75$

Thus, the cost of 11 T-shirts during bargain days is $85.75

4 0

3 years ago

Consider a political discussion group consisting of 1010 Democrats, 1010 Republicans, and 55 Independents. Suppose that two gr

yan [13]

Answer:

The probability is $\frac{3}{20}$

Step-by-step explanation:

Consider a political discussion group consisting of 10 Democrats, 10 Republicans, and 5 Independents.

Total members of the group = $10+10+5=25$

Selecting 2 republicans in succession means selecting 1st republican out of 10 republicans and total 25 members and then selecting 2nd republican out of 9 left republicans and 24 members.

Hence, probability becomes:

$\frac{10}{25}\times \frac{9}{24}$

= $\frac{90}{600} =\frac{3}{20}$

So, the probability is $\frac{3}{20}$

3 0

3 years ago

A gallon of water is equal to 231 cubic inches. How many gallons of water are needed to fill a fish tank that measures 11" high,

9966 [12]

We know that

[volume of a fish tank]=11*14*9-------> 1386 in³

if 1 gallon--------------> 231 in³
X------------------------> 1386 in³
X=1386/231-------> X=6 gallon

the answer is
<span>are needed 6 gallons of water to fill a fish tank</span>

3 0

3 years ago

Answer ASAP BRAINLIEST 20 POINTS

AleksandrR [38]

Answer:

1/2x plus -2

Step-by-step explanation:

5 0

3 years ago

What is the greatest common factor of 3a^2+30a

Lisa [10]

Answer:

Step-by-step explanation:

3 is a prime number so other than 3x1 3 does not have any other factors

6 0

3 years ago