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3 years ago

How many terms are in the expression 3y-5x+4

Mathematics

1 answer:

Molodets [167]3 years ago

7 0

Answer: The amount of terms in this expression is three.

Step-by-step explanation:

Terms are separated by positive and negative signs.

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What is the value of (-7+3i)-(2-6i) A) -9+9i B) -9-3i C) -5-3i D) -5+9i

natka813 [3]

The answer is -9+9i because we combine like terms.

(-7)-2= (-7)+(-2)=-9
(3i)-(-6i)= (3i)+(6i)=9i

hope this helps! :)

4 0

3 years ago

Which of the following r-values indicates the strongest correlation? r-value = 0.73 r-value = 0.73 r-value = 0.99 r-value = 0.99

nasty-shy [4]

Answer:

$r-value = 0.99$

Step-by-step explanation:

Given

The list of options

Required

Which represents the strongest correlation.

When $r-value > 0.7$ , it is considered to be strong.

Compare this condition with the given options, we're left with:

$r-value = 0.73$

$r-value = 0.99$

The above r-values show strong correlation.

However

$r-value = 0.99$ is stronger

because $0.99 > 0.73$

Hence;

$r-value = 0.99$ answers the question

3 0

3 years ago

In order to get an. A in science,Jack must get at least 92% on his next test. If tbe test has 30 questions, what is the minimum

GaryK [48]

Answer:

Jack must Answer minimum 28 question correctly in order to get A in Science.

Step-by-step explanation:

Given:

Percentage required = 92%

Total Number of question = 30

We need to find the number of Question answer correctly.

Solution:

number of Question answer correctly be 'x'

So we can say that;

number of Question answer correctly divided by Total Number of question multiplied by 100 should be greater than or equal to percentage required.

framing in equation form we get;

$\frac{x}{30}\times 100\geq 92\\\\\frac{10x}{3}\geq 92$

Now Dividing both side by $\frac{3}{10}$ we get;

$\frac{3}{10}\times \frac{10x}{3}\geq 92\times \frac3{10}\\\\x\geq 27.2$

Hence Jack must Answer minimum 28 question correctly in order to get A in Science.

3 0

3 years ago

Please help must equal 180 Solve for x. x = [?] 2x + 9 8x + 1

Basile [38]

X=1 1/3 is that helpful because I don’t know if it’s right

8 0

3 years ago

The number of bacteria in a certain population increases according to a continuous exponential growth model, with a growth rate

Harrizon [31]

Double
from initial amont of P to final amount of 2P
so

2P=P(1.071)^time
divide both sides by P
2=1.071^time
take the ln of both sides
ln2=timeln1.071
divide both sides by ln 1.071
(ln2)/(ln1.071)=time needed
using calculator
10.1052=time needed
about 10.1 hours

4 0

3 years ago