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3 years ago

Step 1: d+3 < 1 Step 2: b+6< 9

Mathematics

1 answer:

In-s [12.5K]3 years ago

3 0

Answer:

1) d < -2

2) b < 3

Step-by-step explanation:

1) d+3< 1

subtract both sides by 3

d+3 -3 < 1-3

d<-2

2) b+6< 9

subtract both sides by 6

b+6 -6 < 9 -6

b< 3

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61 random samples of city rent prices are selected from a normally distributed population the samples have a mean of $738 and a

Alenkinab [10]

Answer:

(728, 748)

Step-by-step explanation:

You need the Z value which for 95% confidence interval is 1.96. The mean is $738 and the standard deviation of $41.

$X-Zs/\sqrt{n} \\ X+Zs/\sqrt{n}$

Therefore we can calculated the confidence interval

$738-1.96\cdot{41}/\sqrt{61} =738-10.3$

$738±10.3$

The interval is (728,748)

3 0

3 years ago

Someone please help these practice problems are hard

mr Goodwill [35]

Rewrite the equation in slope-intercept form:

9x - 7y = 21

-7y = -9x + 21

y = (9/7)(x) - 3

The y-intercept is where x = 0.

y = (9/7)(0) - 3

y = 0 - 3

y = -3

The x-intercept is where y = 0.

0 = (9/7)(x) - 3

3 = (9/7)(x)

21 = 9x

x = 21/9

x = 7/3

The correct answer would be C. The x-intercept would be at (7/3, 0) and the y-intercept at (0, -3). Hope that helps! :)

7 0

4 years ago

Graph the function.<br> y = -6x2 - 12x -1

artcher [175]

Answer:

Step by step explanation

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3 years ago

in the past month Rita rented six video games and one DVD the rental price for each video game was $2.50 the rental price for th

laila [671]

Answer:

So in the past month Rita earned $18.50

Step-by-step explanation:

2.50 x 6 = 15

3.50 x 1 = 3.50

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3 years ago

Determine the value of x and y

lapo4ka [179]

Step-by-step explanation:

IGH = JKL

GH = KL

12 = 36

12 × x = 36

x = 36 ÷ 12 = 3

IG =

$\sqrt{ {16 {}^{2} + 12}^{2} }$

= 20

y = 16 × 3 = 48

x =

$\sqrt{ {48}^{2} + {36}^{2} }$

= 60

6 0

3 years ago