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Anettt [7]
3 years ago
12

Evaluate: 7- 9z- 2z when z=8

Mathematics
1 answer:
Y_Kistochka [10]3 years ago
8 0

Answer: 7=11z

Step-by-step explanation: Have a brilliant day! - Lily ^_^

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plant a is 5 centimeters tall growing at the rate of 3 centimeters a month. plant b is 4 centimeters tall
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7 0
3 years ago
If the points A, B and C have the coordinates A(5, 2), B(2, −3) and C(−8, 3), show that the triangle ABC is a right-angled trian
bixtya [17]

Answer:

See below.

Step-by-step explanation:

Triangle ABC will be right-angled if 2 of its sides are perpendicular to each other. When sides are perpendicular the product of their slopes = -1.

Slope  of side AB = (-3-2)/(2-5) = -5/-3 = 5/3

Slope of side BC = (3- -3) / -8-2) = 6/-10 = -3/5

The product of the slopes = 5/3 * -3/5 = -15/15 = -1.

So AB is perpendicular to BC  and triangle ABC is right-angled .

6 0
4 years ago
Please help! 7th one!
denis23 [38]
The method we need to use here is very particular to this type of a situation.  The way we will find that polynomial, or the divisor, is to follow this formula:  g(x)= \frac{dividend-remainder}{quotient}.  For us that will look like this:   g(x)= \frac{4x^4-5x^3-39x^2-46x-2-(-5x+8)}{x^2-3x-5}.  First we will simplify as much as possible that very long numerator there.  It simplifies to   g(x)= \frac{4x^4-5x^3-39x^2-41x-10}{x^2-3x-5}.  What you do now is use long division of polynomials, which, unfortunately, is impossible to show in this forum.  However, get familiar with the long division process if you are not already, and you will find that your polynomial g(x) is   4x^2+7x+2. 
6 0
4 years ago
Carlie is out shopping and finds a 198.00 hat that is on sale for 90% of its original price. What is the new cost of the item? C
lbvjy [14]

I believe the new cost of the item is $19.80

5 0
3 years ago
What is the probability of drawing two aces in a row from a deck of 52 cards, replacing the first card and reshuffling the deck?
sineoko [7]

Answer:

1/169

Step-by-step explanation:

There are 4 aces in a deck of 52.

The probability that the first card is an ace is 4/52.

Since the card is replaced, the probability that the second card is an ace is also 4/52.

The total probability is (4/52) (4/52) = 1/169.

5 0
3 years ago
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