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Mashcka [7]
3 years ago
11

The quotient of 52 and the sum of - 4 and -9

Mathematics
1 answer:
vampirchik [111]3 years ago
7 0

Answer:

89

Step-by-step explanation:

You might be interested in
Y=-x+5<br> Y=x+1<br> Solve the system
Elis [28]

Answer:

y =  - x + 5 \\ y = x + 1 \\   - x + 5 = x + 1 \\  - 2x =  - 4  \\ x = 2 \\ y = 2 + 1 = 3 \\ y = 3

Therefore the answer is:

x=2; y=3

Good luck!

Intelligent Muslim,

From Uzbekistan.

3 0
3 years ago
Find the P-value for the hypothesis test with a standardized test statistic z. Decide whether toreject the null hypothesis for t
iren2701 [21]

Answer:

1.) We don't reject the null

2.) We reject the Null

3.) We do not reject the null

Step-by-step explanation:

Obtaining p values using test statistic:

Given that ; we have a standardized test statistic and α - values ;

Let's define the decision region :

If Pvalue < α ; Reject H0 ; otherwise, fail to reject H0

A.)

Left tail , Z = - 1.32 ; α = 0.10

We can use the Pvalue calculator from Z score :

Pvalue = 0.934

Pvalue > α ; Hence, we fail to reject the null, H0

B.)

Right-tailed test, z = 2.46, α = 0.01

Pvalue from Zscore calculator ;

Pvalue = 0.0069

Pvalue < α ; Hence, we reject the null, H0

C.)

Two-tailed test, z = -1.68, α = 0.05

Pvalue from Zscore calculator ;

Pvalue = 0.093

Pvalue > α ; Hence, we fail to reject the null, H0

6 0
3 years ago
Just take the points, I should give more of these easy questions.
dem82 [27]

Answer:

32 feet^3

Step-by-step explanation:

LxWxH to find volume

6 0
3 years ago
Read 2 more answers
A metal worker has several 1-kilogram bars of a metal alloy that contain 23% copper and several 1-kilogram bars that contain 79%
astraxan [27]

Answer:

30 each of 23% bars and 18 each of 79% bars

Step-by-step explanation:

If x is the number of 1 kg 23% copper bars, and y is the number of 1 kg 79% copper bars, then:

x + y = 48

0.23x + 0.79y = 0.44(48)

Substituting and solving:

0.23x + 0.79(48-x) = 0.44(48)

0.23x + 37.92 - 0.79x = 21.12

16.8 = 0.56x

x = 30

y = 48 - x

y = 18

You need 30 each of 23% bars and 18 each of 79% bars.

4 0
3 years ago
In triangle ABC, AC=13, BC=84, and AB=85. Find the measure of angle C
r-ruslan [8.4K]

Answer:

90°

Step-by-step explanation:

Angle C = arccos((84²+13²-85²)/(2×84×13))

= arccos(0/2184)

= arccos(0)

= 90°

Answered by GAUTHMATH

3 0
2 years ago
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