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omeli [17]
3 years ago
13

Solve for the value of the star 17= -2 • ⭐️ +3

Mathematics
2 answers:
bixtya [17]3 years ago
7 0
The answer would be 7 i think:)
Bess [88]3 years ago
5 0

Answer:star equals -7

Step-by-step explanation: One could use process of elimination by multiplying -2 going up the numbers and add 3 until said number is found

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Given: △ABC, AB=5 sqrt 2 m∠A=45°, m∠C=30° Find: BC and AC will give brainliest!!! By the way the answer is not 5 and 3.66
Makovka662 [10]

Answer:

Therefore,

BC=a=10\ units\\\\AC=b=13.66\ units

Step-by-step explanation:

Consider a Δ ABC with

m∠ A = 45°

m∠ C = 30°

AB = c = 5√2

To Find:

BC = a = ?

AC = c = ?

Solution:

Triangle sum property:

In a Triangle sum of the measures of all the angles of a triangle is 180°.

\angle A+\angle B+\angle C=180\\\\45+30+\angle B=180\\\ttherefore m\angle B =180-75=105\°

We know in a Triangle Sine Rule Says that,

In Δ ABC,

\frac{a}{\sin A}= \frac{b}{\sin B}= \frac{c}{\sin C}

substituting the given values we get

\frac{a}{\sin 45}= \frac{b}{\sin 105}= \frac{5\sqrt{2} }{\sin 30}

∴ \frac{a}{\sin 45}= \frac{5\sqrt{2} }{\sin 30}\\\\a=\sin 45\times \frac{5\sqrt{2} }{\sin 30}\\\\a=\frac{1}{\sqrt{2} }\times \frac{5\sqrt{2} }{0.5} \\\\\\a=\frac{5}{0.5} =10\\\therefore BC = a = 10\ units

Similarly for 'b',

\frac{b}{\sin 105}= \frac{5\sqrt{2} }{\sin 30}\\\frac{b}{0.9659}= \frac{5\sqrt{2} }{0.5}\\\\b=0.9659\times \frac{5\sqrt{2} }{0.5}\\\\b=\frac{6.8301}{0.5} \\\\b=13.66\\\therefore AC = b =13.66\ units\\

Therefore,

BC=a=10\ units\\\\AC=b=13.66\ units

8 0
3 years ago
ABC is isosceles with AB=AC=8 units and BC=6 units. D and E are midpoints of AB and BC respectively. Calculate the length of DE?
Allushta [10]
The triangle is drawn and is shown in the image attached with.

We get two similar triangles. Triangle ABC and Triangle ADE. Since the triangles are similar the ratio of their corresponding sides will be the same. 

D and E are the midpoints of AB and BC, therefore, AD and AE are both 4 units in length. Using the property of similar triangles, we can say:

AD : DE= AB : BC
AD = 4 units
AB = 8 units
BC = 6 units
DE = unknown = x units

So,

4 :x = 8 : 6 \\  \\ 
 \frac{4}{x} = \frac{8}{6}  \\  \\ 
x=4* \frac{6}{8}=3 


Therefore, the length of DE will be 3 units

6 0
3 years ago
Find the LCD for the following fractions: , 25x3 60x3 25x5 60x5
zimovet [89]

Answer:

We need to find the lowest common divisor which is the smallest possible number that is dividable by ALL numbers.

We have the following numbers:

\frac{25}{3}

\frac{60}{3}

\frac{25}{5}

\frac{60}{5}

For the denominators (3, 3, 5, 5) the least common multiple (LCM) is 15.

LCM(3, 3, 5, 5) . Therefore, the least common denominator (LCD) is 15.

Rewriting the original inputs as equivalent fractions with the LCD:

125/15, 300/15, 75/15, 180/15

7 0
4 years ago
Thank you for the help
koban [17]
His suit case is 7,938 cubic inches i think
7 0
3 years ago
Read 2 more answers
Joe biked 1 9/12 miles from home to the lake,then went some miles around the lake,and then back home Joe biked a total of 4 9/12
dsp73

Answer:

The answer to your question is 5/4 or 1 1/4

Step-by-step explanation:

Data

distance traveled from home to the lake = 1 9/12

total distance = 4 9/12

distance traveled around the lake = ?

Process

1.- Convert the mixed fractions to improper fractions

a) 1 9/12 = (12 + 9)/12 = 21/12 = 7/4

b) 4 9/12 = (48 + 9)/ 12 = 57/12 = 19/4

2.- Multiply the distance from home to the lake by two

        7/4 x 2 = 14/4 = 7/2

3.- Subtract the result of "2" from the total distance

        19/4 - 7/2 = 19/4 - 14/4 = 5/4

5.- The distance around the lake is 5/4 or 1 1/4                  

4 0
3 years ago
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