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777dan777 [17]
4 years ago
6

The mathematical expression 9 ∉ T means:

Mathematics
1 answer:
Katyanochek1 [597]4 years ago
7 0
9∉T means that 9 is not an element of the set T .
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Help!!!! please!! i’m confused of this.
Juli2301 [7.4K]

Answer:

f(-3) = 44

Step-by-step explanation:

f(x) = 2x² - 5x + 11

Substitute the value.

f(-3) = 2(-3)² - 5(-3) + 11

Raise -3 to the power of 2.

f(-3) = 2(9) - 5(-3) + 11

Multiply 2 and 9.

f(-3) = 18 - 5(-3) + 11

Multiply -5 and -3.

f(-3) = 18 + 15 + 11

Add 18 and 15.

f(-3) = 33 + 11

Add 33 and 11.

f(-3) = 44

3 0
3 years ago
Given: AD = BC and BCD = ADC <br> Prove: DE = CE
erastova [34]

Answer:

According to AD=BC So AC=BD

Step-by-step explanation:

AD = BC and angle ADC = angle BCD

we have to prove AC = BD

let's see ∆ADC and ∆BCD

AD = BC [ given ]

angle ADC = angle BCD [ given ]

CD = CD

from S - A - S

∆ADC congruence ∆BCD

3 0
4 years ago
Read 2 more answers
Trey has completed 36 deliveries so far this week. He needs to make 80 deliveries for the week. What percentage of deliveries ha
anygoal [31]

We must build the proportion

deliveries made : deliveries due = x : 100

in fact, we must express the fraction of work done as a fraction with denominator 100.

So, we have

\dfrac{36}{80}=\dfrac{x}{100}\iff x=\dfrac{3600}{80}=45

Trey has completed 45% of his work so far.

3 0
3 years ago
Which of the following choices best justifies the conclusion based on the given information?
Sindrei [870]
To abide by the mathematical order of operations in this equation you must distribute "a" into "b" and "c" by multiplying, which is the distributive property. So the answer would be C. Distributive
8 0
3 years ago
Read 2 more answers
Please help 15 points
Assoli18 [71]

Answer:

D) Alternate exterior angles

Step-by-step explanation:

Alternate Exterior Angles are a pair of angles on the outer side of each of those two lines but on opposite sides of the transversal.

7 0
3 years ago
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