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alukav5142 [94]
3 years ago
12

I'm totally lost please help i have a test on it tomorrow

Mathematics
1 answer:
Mumz [18]3 years ago
3 0
If the pattern continues, it could be 2.75 * 63.63 repeating to get to the end of the card. The second answer is 63. When she started the card, she had $175. Divide 175 by 2.75 and you get 63 repeating.
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A pyramid has a square base that is 160m on each side. What is the perimeter of the base in kilometers?
Nikolay [14]
The perimeter is the sum of all sides' lengths

So the perimeter = 4*160 m =640 m = 0.64 km
4 0
3 years ago
Read 2 more answers
Please I need help the answer please
Volgvan

Answer:-72

Step-by-step explanation:

(6)*(-12)

-72

5 0
4 years ago
Read 2 more answers
The lengths of the three sides of a triangle (not necessarily a right triangle) are 3.16 meters, 8.25 meters and 10.4 meters. wh
Dafna1 [17]
For non-right triangles you must use the "Law of Cosines"  and then, the "Law of Sines" to solve this<span>.

a= </span> 8.25m<span>
b=</span> 10.4m<span>
c= </span>3.16m
∠<span>A= UNKNOWN
</span>∠<span>B= UNKNOWN
</span>∠<span>C=UNKNOWN

Law of Cosines:
c</span>²= a²+b²-2abCos(C)
(3.16)²= (8.25)²+(10.4)²- 2(8.25)(10.4)(cos(C))
9.9856 = 68.0625 + (108.16) - (171.6)(cos(C)
9.9856 = 176.2225- 171.6 cos C
-166.2369=  - (171.6(cosC))
cosC= 0.968746503
<span>Take the inverse cosine of that to get the measure of angle C
</span>∠C= 15.95813246°
<span>
Now Use law of sines to find </span>∠B:
\frac{10.4}{Sin(B)} = \frac{3.16}{sin(15.96)}
\frac{10.4}{Sin(B)} =12.73922
10.4 =12.73922115(sinB)
sinB= 0.816276439
(take the inverse sine to get the measure of ∠B)
∠B= 60.8040992°
<span>

Answer:
The angle measures approximately 60.80</span>°.<span>



</span>

7 0
4 years ago
The midpoint of AB = ([?], [])<br> M = (x¹+x², ¹2²)<br> PLS HELP I WILL MARK BRAINLIEST
OlgaM077 [116]

Answer:

\sf M=\left(-\dfrac{1}{2},0\right)

Step-by-step explanation:

Let (x₁, y₁) = Point A = (-2, 1)

Let (x₂, y₂) = Point B = (1, -1)

\sf Midpoint=\left(\dfrac{x_1+x_2}{2},\dfrac{y_1+y_2}{2}\right)

\implies \sf Midpoint=\left(\dfrac{-2+1}{2},\dfrac{1+(-1)}{2}\right)

\implies \sf Midpoint=\left(-\dfrac{1}{2},0\right)

6 0
2 years ago
Travis is cutting strips of paper for a project. He needs strips that are 114 inches wide. He cut his first strip too wide. His
choli [55]

Travis cuts 125 whole 2/5 inches wide strip if the percent of error was 10% the actual length of the strips he needs to cut was 114 inches

<h3>What is the percentage?</h3>

It is defined as the ratio of two numbers expressed in the fraction of 100 parts. It is the measure to compare two data, the % sign is used to express the percentage.

We have:

The length Travis needs to cut = 114 inches

Percent of error = 10%

Let's assume he cuts x inches wide strip

So from the percent of error formula:

\rm \dfrac{x-114}{114} = \dfrac{10}{100}

\rm x = \dfrac{114}{10}+114

\rm x = \dfrac{1254}{10}\Rightarrow \dfrac {627}{5}  or

\rm x = 125\dfrac{2}{5} \ inches  

Thus, Travis cuts 125 whole 2/5 inches wide strip if the percent of error was 10% the actual length of the strips he needs to cut was 114 inches

Learn more about the percentage here:

brainly.com/question/8011401

#SPJ1

3 0
3 years ago
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