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3 years ago

The square rootof which number is rational a7. b 1.96. c. 0.04. d. 13

Mathematics

2 answers:

PSYCHO15rus [73]3 years ago

8 0

Answer:

B and C

Step-by-step explanation:

7 = 7

1.96 = $\frac{196}{100}$

0.04 = $\frac{4}{100}$

13 = 13

artcher [175]3 years ago

3 0

Answer:

B and C

Step-by-step explanation:

We need to find which one of these numbers is a perfect square. We know 7 and 13 can be eliminated since they're prime numbers so they can't be perfect squares. B and C are both perfect squares so that's the answer.

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X² + 3x + k = 0<br>pls help

denis-greek [22]

Answer:

$\left(h,\:k\right)=\left(-\frac{3}{2},\:\frac{9}{4}\right),\:p=-\frac{1}{4}$

Step-by-step explanation:

$x^2+3x+y=0$

$4\left\bigg(-\frac{1}{4}\right)\left\bigg(y-\frac{9}{4}\right)=\left\bigg(x-\left\bigg(-\frac{3}{2}\right)\right)^2$

$\bold{\mathrm{Therefore\:parabola\:properties\:are:}}$

$\left(h,\:k\right)=\left(-\frac{3}{2},\:\frac{9}{4}\right),\:p=-\frac{1}{4}$

3 0

2 years ago

a circus charges $2.50 for kids tickets and $6 for adult tickets last week and twice as many kids attended the circus than adult

aliina [53]

Let
x-----------> the number of kids
y----------> the number of adults

we know that
2.5x+6y=$7150---------> equation 1
x=2y-------------> equation 2
substitute 2 in 1
2.5*[2y]+6y=7150-----> 5y+6y=7150----> 11y=7150-----> y=650
x=2y----> x=2*650----> 1300

the answer is
the number of kids is 1300

5 0

2 years ago

Y=-4.3x-1.3<br> Y=1.7x+4.7

Contact [7]

Answer:

0.566666666

Step-by-step explanation:

5 0

3 years ago

1. Three friends pooled their money to purchase a new game system that costs $298. One person

iragen [17]

Answer:

First person: $107

Second person: $98

Third person: $93

Step-by-step explanation:

Let be "f" the amount of money (in dollars) that the first person contributed to the purchase, "s" the amount of money (in dollars) that the second person contributed to the purchase and "t" the amount of money (in dollars) that the third person contributed to the purchase.

With the information given in the exercise, you can set up the following equations:

Equation 1 → $f+s+t=298$