2 years ago

HELP ME HEKP ME HELP ME MATH PLS ASAP

Mathematics

2 answers:

Usimov [2.4K]2 years ago

4 0

Answer:

1st one: Add 4y to both sides

2nd one: x = 2y+2z

I hope this is good enough:

Kay [80]2 years ago

3 0

Basically what you need to do is divide the 2x by the number you have there

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Complete the sentence

ryzh [129]

Answer: b, d

Step-by-step explanation:

Corresponding angles are formed when two parallel straight lines are cut by a transversal

$\angle b=62^{\circ}$

In the figure, $\angle d\ \text{and}\ 62^{\circ}$ are alternate angle

$\therefore \angle d=62^{\circ}$

3 0

2 years ago

Carbon-14 dating assumes that the carbon dioxide on Earth today has the same radioactive content as it did centuries ago. If thi

defon

7978 years

Step-by-step explanation:

A = A02^(-t/hl)

where hl = half-life.

Dividing both sides by A0 and taking the logarithm, we get

ln(A/A0) = -(t/hl)ln2

or solving for t,

t= -(hl)ln(A/A0)/ln2

note that A/A0 = 0.38

t = -(5715 yrs)[ln(0.38)/ln2]

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2 years ago

What is the perimeter of this polygon? A 3 cm 9 cm B 3 cm [?] cm Fnter

77julia77 [94]

Answer:

Step-by-step explanation:

side 1 - 13 (9+3)

base - 6 (3+3)

side 2 - 13 (9+3)

Triangle perimeter formula - a + b +c

13 + 6 + 13 = 32

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2 years ago

Use fractions strips to find the difference. Write your answer in simplest form 4/5 - 1/2

jarptica [38.1K]

Answer:

3/10

Step-by-step explanation:

4/5-1/2

8/10-5/10

3/10

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3 years ago

Krystal hiked 109 miles last year. Tanji hiked 12 times as many miles as Krystal. How many miles did Tanji hike last year

lapo4ka [179]

Answer:

1308

Step-by-step explanation:

109 x12

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2 years ago