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2 years ago

Ixtli has $126 saved up to buy her mom a Christmas gift. That is three times as much money as her sister

Mathematics

2 answers:

Trava [24]2 years ago

6 0

Answer:

They will need $47 more to reach their goal of $215

Step-by-step explanation:

since we know Ixtli has saved $126 and that her sister has saved 3 times less than that, we can find how much her sister has saved by taking a third of 126. This will give you that her sister has saved $42. Altogether they have a total of $168. Take the total amount they want to have ($215) and subtract how much they currently have. This will result in $47 short of $215

wlad13 [49]2 years ago

4 0

Ixtli- $126
Sister- $126/3 = $42
Gift- $215

215-(126+42)=?
215-168= $47

They need $47 more for their goal

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3m - 3(m+8) > 3m (Teacher didn't go over this hopefully I can get an explanation)

zhuklara [117]

Alrighty!

*Note the ">" sign is similar to the "=" sign.

3m - 3(3m + 8) > 3m
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Makes sense?

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3 years ago

Round to the nearest tenth.

laila [671]

Answer:

8.2 units

Step-by-step explanation:

Given that the only information for our triangle are 2 sides and 1 angle, we must use the Law of Cosines to find side BC

Recall the Law of Cosines

$a^2=b^2+c^2-2bc\cdot cos(A)$

Identify angles and sides

$m\angle A=23^\circ\\a=BC=?\\b=AC=14\\c=AB=6$

Solve for side "a"

$a^2=b^2+c^2-2bc\cdot cos(A)\\\\a^2=14^2+6^2-2(14)(6)\cdot cos(23^\circ)\\\\a^2=196+36-168cos(23^\circ)\\\\a^2=222-168cos(23^\circ)\\\\a=\sqrt{222-168cos(23^\circ)}\\ \\a\approx8.2$

Therefore, the length of line segment BC is about 8.2 units

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2 years ago

Five people each write a positive integer on a piece of paper. If the average of these five integers is 8, what is the greatest

erik [133]

Answer:

Option D. $40$

Step-by-step explanation:

Let

x------>the greatest possible value

we know that

If four people write the number zero, then the average will be

$8=(0+0+0+0+x)/5\\ \\40=0+x\\ \\x=40$

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3 years ago

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6= square root of x+ 1

blondinia [14]

I'm going to answer this as a process going down:
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x=6²-1 As well as the +1
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3 years ago

The coastline of the United States is 12,383 miles long Canada coastline is 113,211 miles longer than the coastline of the Unite

jek_recluse [69]

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x - 12,383 = 113,211
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x = 113,211 + 12,383
x = 125,594
Basically, you add the two given numbers together.

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3 years ago

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