3 years ago

Maths Assignment 4-a^2

Mathematics

2 answers:

Ugo [173]3 years ago

7 0

Answer:

Step-by-step explanation:

Use the identity: a² - b² = (a+ b)(a - b)

4 - a² = 2² - a² {Here a = 2 and b = a}

= (2 +a) (2 - a)

galben [10]3 years ago

5 0

Answer:

(2-a)^2

(2+a) (2-a)...

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Solve the following inequality algebraically. ∣x+7∣≤8

AlekseyPX

Answer:

x ≤ 1 and x ≥ −15

Step-by-step explanation:

Solving Absolute Value

We know that x + 7 ≤ 8 or x + 7 ≥ -8

Condition 1:

Step 1: Subtract 7 from both sides.

$x + 7 - 7\leq 8 - 7$
$x\leq 1$

Condition 2:

Step 1: Subtract 7 from both sides.

$x + 7 - 7\geq -8 - 7$
$x\geq -15$

Therefore, the answer is x ≤ 1 and x ≥ -15.

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3 years ago

Which choice is equivalent to the fraction below when x is an appropriate value? Hint: Rationalize the denominator and simplify.

densk [106]

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Negative numbers five and nine

maks197457 [2]

Answer:

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Please answer this correctly

GREYUIT [131]

0 Minutes 18 Seconds

3 0

3 years ago

emma,clare ,and mark sent a total of 63 text messages during the weekend. clare sent 5 fewer messages than emma. mark sent 2 tim

11Alexandr11 [23.1K]

Answer:

Emma = 17

Clare = 12

Mark = 34

Step-by-step explanation:

Emma = x

Clare = x-5

Mark = 2x

2x+x+x-5=63

4x=5=63

4x=63+5

4x=68

x=17

Emma = x = 17

Clare = x-5 = 17-5 = 12

Mark = 2x = 2(17) = 34

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3 years ago