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rodikova [14]
3 years ago
14

What is the value of this expression when x=-1 and Y = 2? 4x3y² Mark this and return

Mathematics
1 answer:
atroni [7]3 years ago
8 0

Answer: -48

Step-by-step explanation:

We substitute -1 and 2 into the equation of 4x3y^2

4(-1) * 3(2)^2 =

-4* 12 =

-48

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matrenka [14]
116/21 hope this helped !
4 0
3 years ago
Which amount is greater, 5 feet or 2 yards?
Vedmedyk [2.9K]

Answer:

2 yards

Step-by-step explanation:

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2 years ago
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Which points are on the graph of f(x) = RootIndex 3 StartRoot x EndRoot? Check all that apply. (–27, –3) (–1, 1) (0, 0) (1, 1) (
Vanyuwa [196]

Answer:

(-27,-3) (0,0) (1,1)

Step-by-step explanation:

Because I got it right xD

6 0
3 years ago
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Renee wants to estimate the percentage of people who lease a car. She surveys 150 individuals and finds that 33 lease a car. Fin
Oduvanchick [21]

Answer: (0.164,\ 0.276)

Step-by-step explanation:

The confidence interval of population proportion is given by :-

\hat{p}\pm z_{\alpha/2}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}

Given : Sample size : n=150

The proportion of individuals lease a car :hat{p}=\dfrac{33}{150}=0.22

Significance level : \alpha: 1-0.9=0.1

Critical value : z_{\alpha/2}=1.645

Then, the confidence interval of population proportion is given by :-

0.22\pm (1.645)\sqrt{\dfrac{0.22(1-0.22)}{150}}\\\\\approx0.22\pm0.056=(0.164,\ 0.276)

Hence, the confidence interval for the population proportion with a 90% confidence level= (0.164,\ 0.276)

5 0
3 years ago
You are making gift baskets. each basket will contain three different types of candles: tapers, pillars ad jar candles. tapers c
nikdorinn [45]
Let
x = the number of tapers (each coss $1)
y = the number of pillars (each costs $4)
z = the number of jars (each costs $6)

There are 8 candles in each basket, therefore
x + y + z = 8                   (1)

The cost per basket is $24, therefore
x + 4y + 6z = 24             (2)

The number of tapers equals the sum of pillars and jars, therefore
x = y + z                          (3)

Substitute (3) into (1) and into (2).
y + z + y + z = 8
2y + 2z = 8
y + z = 4                           (4)

y + z + 4y + 6z = 24
5y + 7z = 24                     (5)
From (4), y = 4 -z. Substitute into (5).
5(4 - z) + 7z = 24
2z + 20 = 24
2z = 4
z = 2
y = 4 - z = 4 - 2 = 2
x = y + z = 2 + 2 = 4

Answer: 4 tapers, 2 pillars, 2 jars.
4 0
3 years ago
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