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Ostrovityanka [42]
2 years ago
6

Which number is a constant in the algebraic expression? Negative x squared minus 6 y + 13 x + 7 Negative 6 Negative 1 7 13

Mathematics
2 answers:
muminat2 years ago
4 0

Answer:

7

Step-by-step explanation:

-x^2 -6y+13x+7

The constant is the term with no variable attached to it

7 is the constant

nikitadnepr [17]2 years ago
4 0

Answer:

7 is the constant

Step-by-step explanation:

because -x^2 -6y+13x+7

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Johanna, Elizabeth, and Dan are preparing a chemical solution for a research project. When
Bond [772]

Using the together rate, it is found that they would prepare the solution in 1.71 minutes working together.

<h3>What is the together rate?</h3>

It is the sum of each separate rate.

In this problem, the rates are given by:

  • Johanna's: 1/6.
  • Elizabeth's: 1/6.
  • Dan's: 1/4.

Hence the together rate is given by:

\frac{1}{x} = \frac{1}{6} + \frac{1}{6} + \frac{1}{4}

\frac{1}{x} = \frac{1}{3} + \frac{1}{4}

\frac{1}{x} = \frac{4 + 3}{12}

7x = 12

x = 12/7

x = 1.71.

They would prepare the solution in 1.71 minutes working together.

More can be learned about the together rate at brainly.com/question/25159431

#SPJ1

8 0
1 year ago
write the six digit number that has the digit 4 in the thousands’ place, with each of the remaining digits being 3.
Rus_ich [418]
I’m pretty sure that the answer is 334333
6 0
3 years ago
PLEASE ONLY ANSWER IF YOU'RE CORRECT!!<br> :)
Colt1911 [192]

Answer:

1 is multiplication

2 is addition

3 is simplification

4 is division

5 is simplification

Step-by-step explanation:

5 0
2 years ago
Three different methods for assembling a product were proposed by an industrial engineer. To investigate the number of units ass
In-s [12.5K]

Answer:

is an attachment

test statistic = 9.87

p value is less than 0.01

Not all means of the three assembly methods are equal

Step-by-step explanation:

the anova table is an attachment

total number of methods = k = 3

number of observations n = 30

for treatment, df = 3-1 = 2

for error, df = 30 -3 (n-k) = 27

sst = 10800, sstr = 4560, sse = 10800-4560 = 6240

we find the mean of squares for error

sse/df of error = 6240/27 = 231.11

mean of squares for treatment = 4560/2 = 2280

test stat

F = 2280/231.11

= 9.8654

using f distribution table;

alpha = 0.05

df = 2 , 27

we get 3.35

h0; no difference in mean

h1; there is difference

9.87 > 3.35 so we reject H0, there is difference in means. all are not equal.

pvalue calculation

using excel,

FDIST(9.8654, 2, 27) = 0.0006078

p value is less than 0.01

we conclude that a. Not all means of the three assembly methods are equal

3 0
3 years ago
ALGEBRA! NEED HELP!
Nimfa-mama [501]
Since each edge's length is x, each face's are would be { x }^{ 2 }
And cubes have 6 faces. multiply 6 by { x }^{ 2 }, the formula is :6{ x }^{ 2 }
7 0
3 years ago
Read 2 more answers
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