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3 years ago

Evaluate the expression

Mathematics

2 answers:

GaryK [48]3 years ago

6 0

This is what you get when you multiply out the equation:

7 $7^{2} +15.6-8.4$

Klio2033 [76]3 years ago

5 0

56.2 is the answer.

:)

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Write a definition of your choice. Then write the definition as a biconditional.

igomit [66]

Answer:

Biconditional statements do not use the key words 'if' and 'then. ' Biconditional statements are true statements that combine the hypothesis and the conclusion with the key words 'if and only if. ' For example, the statement will take this form: (hypothesis) if and only if (conclusion).

Step-by-step explanation:

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3 years ago

What is a corresponding angle?

sasho [114]

Answer:

the angles which occupy the same relative position at each intersection where a straight line crosses two others. If the two lines are parallel, the corresponding angles are equal

Step-by-step explanation:

Just do what i put up there

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3 years ago

Let U = {1, 2, 3, 4, 5, 6), A = {1, 2, 3, 4), and B = {1, 2, 4). Find the set A n B.

PSYCHO15rus [73]

Step-by-step explanation:

(A n b) = this means that we need d value that is in a and b only

ans= (1,2,4)

3 0

2 years ago

X+2=-12<br><br> Help ASAP!<br> PLEASE!

Lena [83]

Hey there!

Answer = -14

Explanation:

Let's solve your equation step-by-step.

x + 2 = -12

Subtract 2 from both sides:

x + 2 - 2 = -12 - 2

x = -14

So therefore, that is how you found your answer: x = -14

5 0

3 years ago

In a geometric sequence, if a3 = ‒5 and a6 = 40, determine a1, r, and an. Then write the first three terms of the sequence.

Tresset [83]

$a_4=ra_3$
$a_5=ra_4=r^2a_3$
$a_6=ra_5=r^3a_3$

$40=-5r^3\implies r^3=-8\implies r=-2$

$a_3=ra_2=r^2a_1$

$-5=(-2)^2a_1\implies a_1=-\dfrac54$

You know the first and third terms, $a_1$ and $a_3$ , so you just need to find the second term $a_2$ :

$a_2=ra_1\implies a_2=-2\left(-\dfrac54\right)=\dfrac52$

7 0

3 years ago