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2 years ago

Solve for x. -0.7(0.3x - 0.8) = -4.48

1 answer:

8 0

Divide both sides by -0.7 to get rid of that pesky thing in the front
0.3x-0.8=6.4
add 0.8 to both sides
0.3x=7.2
divide both sides by 0.3
x=24

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Find the value of the expression 4a^4 − 2b^2 + 40 when a = 2 and b = 7

Effectus [21]

Answer:6

Step-by-step explanation:

4(2)^4 − 2(7)^2 + 40

4(16)-2(7)^2+40

64-2(49)+40

64-98+40

-34+40

7 0

2 years ago

Read 2 more answers

Please help me i beg of u due today

Zepler [3.9K]

Answer:

110

Step-by-step explanation:

80 + 30

= 110

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3 years ago

Let sets A and B be defined as follows.

VashaNatasha [74]

<h3>Given</h3>

Set A: A = {-26, -25, -24, -23, - 22, - 21}
Set B: B ∈ {x: x is even, x ≥ 6 and x ≤ 20}

Cardinality means the number of elements in the set.

Cardinality of the set A:

n(A) = 6, since we can count 6 elements.

Set B has even numbers between 6 and 20, both included:

B = {6, 8, 10, 12, 14, 16, 18, 20}

Then its cardinality is:

n(B) = 8

To solve this we need to compare the elements of sets A or B with numbers given:

-22 ∈ A, True ⇒ -22 is listed as element of A
6 ∈ B, True ⇒ 6 is listed as element of B
- 21 ∉ A, False ⇒ - 21 is listed as element of A
2 ∈ B, False ⇒ 2 is not listed as element of B

5 0

1 year ago

Josiah and his children went into a grocery store and he bought $15 worth of peaches and mangos. Each peach costs $0.50 and each

Westkost [7]

Step•BY•Step Explanation~|

 ♡♡♡♡♡♡♡♡♡♡♡♡♡ 

y=1.50

x=0.50

1.50

1.59

______+

3.00

0.50

_____+

3.50

<h2>Answer:♡~</h2>

3.50

HOPE IT HELPSS

8 0

2 years ago

Evaluate for x=4 and y=-3 write in simplest form 2y/x2

lorasvet [3.4K]

Hello from MrBillDoesMath!

Answer:

I think your formula (2y/x2) is equivalent to

(2*y)/(x^2) where x^2 means x-squared.

If so, then

(2*y)/(x^2) = (2*3)/(4*4) = 6/16 = 3/8

Thank you,

MrB

7 0

2 years ago