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3 years ago

Use the inequality symbol to compare 5+(-4)____________14+(-13)

Mathematics

2 answers:

Margarita [4]3 years ago

6 0

Both inequality is different positive and negative and it would be

NNADVOKAT [17]3 years ago

5 0

Answer:

5+(-4) ≤ 14+(-13)

Step-by-step explanation:

5+(-4) = 1

where 14 + (-13) = 1

seeing as 1 os whole we round down not up from whole numbers

Thus using the same sign reading left to right only as ≤ meaning less than or equal to for both sides.

OR write ≤ 1 ≥ as both inequalities = 1 and must be equal to or less than in same symbol reading left to right.

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Solve the equation.

Ad libitum [116K]

Answer:

D. 13 1/2

Step-by-step explanation:

2/3 x -2 = 7

2/3 x -2 + 2 = 7 + 2

2/3 x = 9

x = 9 (3/2)

x = 27/2

x = 13 1/2

6 0

3 years ago

The Department of Transportation would like to test the hypothesis that the average age of cars on the road is less than 12 year

puteri [66]

Answer:

$z=\frac{10.6-12}{\frac{4.1}{\sqrt{45}}}=-2.29$

Step-by-step explanation:

information given

$\bar X=10.6$ represent the sample mean

$\sigma=4.1$ represent the population standard deviation

$n=45$ sample size

$\mu_o =12$ represent the value that we want to test

$\alpha=0.05$ represent the significance level for the hypothesis test.

z would represent the statistic

$p_v$ represent the p value for the test

Hypothesis to test

We want to test if the true mean is less than 12, the system of hypothesis would be:

Null hypothesis: $\mu \geq 10$

Alternative hypothesis: $\mu < 10$

The statistic is given by:

$z=\frac{\bar X-\mu_o}{\frac{\sigma}{\sqrt{n}}}$ (1)

Replacing the info given we got:

We can replace in formula (1) the info given like this:

$z=\frac{10.6-12}{\frac{4.1}{\sqrt{45}}}=-2.29$

8 0

3 years ago

Point B is in between A and C in a segment. AB= 22 and BC=30 Find AC

dolphi86 [110]

Answer:

AC = 52

Step-by-step explanation:

Add the segment lengths together.

AB + BC = AC

22 + 30 = 52

4 0

2 years ago

Simplify the following expressions. Put your a (3x³-5x² - 7+ 4x4) + (9x4 - 10x² - 5x³ + 3) =

leonid [27]

first we need to get rid of the ( ) so that we can see what the question really says

(3x³-5x² - 7+ 4x4) + (9x4 - 10x² - 5x³ + 3)

= 3x³-5x²-7+4x⁴+9x⁴-10x²-5x³+3

now all we need to do is add up the numbers with the same x's

3x³-5x²-7+4x⁴+9x⁴-10x²-5x³+3

= 13x⁴-2x³-15x²-4

6 0

2 years ago

(-5xy2 z) (7x 6 y 2 z-3x5 y - 4xz)

kumpel [21]

Step-by-step explanation:

la respuesta es no es porque es falsa

4 0

2 years ago