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3 years ago

PLEASE HELP ME!!!!! ASAP!!!! HELP!!!! 20 POINTS!!!

2 answers:

7 0

Obtuse angle > 90°. In order to get an isosceles triangle with one obtuse angle,
should be greater than 90°. In this case: B: 100°, 40°, 40°

SSSSS [86.1K]3 years ago

6 0

B, it should add up to 180 degrees

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What is the distance between (4,2) and (4, -1)

ELEN [110]

The correct answer is 3

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3 years ago

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Solve the given system of equations utilizing either the substitution or addition method.

Nataly [62]

Answer:

Value of x=4 and y=-13/3

Step-by-step explanation:

We need to solve the systems of equations

$5x+3y=7 \ and \ \frac{3}{2}x-\frac{3}{4}y =9\frac{1}{4}$

Solving using substitution method:

Let:

$5x+3y=7---eq(1) \\ \frac{3}{2}x-\frac{3}{4}y =9\frac{1}{4}---eq(2)$

Find value of x from eq(1) and put in eq(2)

$5x+3y=7\\5x=7-3y\\x=\frac{7-3y}{5}$

Put value of x in eq(2)

$\frac{3}{2}(\frac{7-3y}{5}) -\frac{3}{4}y =\frac{37}{4}\\\frac{21-9y}{10} -\frac{3}{4}y =\frac{37}{4}\\Taking \ LCM\\\frac{21*2-9y*2-3y*5}{20} =\frac{37}{4}\\\frac{42-18y-15y}{20} =\frac{37}{4}\\42-33y=\frac{37}{4}*20\\42-33y=185\\-33y=185-42\\-33y=143\\y=\frac{143}{-33}\\y=-\frac{13}{3}$

Now, finding value of x by putting value of y in eq(1)

$x=\frac{7-3y}{5}\\x= \frac{7-3(-\frac{13}{3}) }{5}\\x=\frac{7+13}{5}\\x=\frac{20}{5}\\x=4$

So, Value of x=4 and y=-13/3

4 0

3 years ago

(100 points)

LekaFEV [45]

Answer:

30/10 and 5/11

Step-by-step explanation:

8 0

4 years ago

Can you please help with math

melomori [17]

Interpret the exponent in the formula. S to the third power means to use s as a factor 3 times.

V = S to the third power = S x S x S

Find the volume of the first cube.
Substitute 4 for s.

V = 4 x 4 x 4 = 64

Find the volume of the second cube.
Substitute 7 for s.

V = 7 x 7 x 7 = 343

Tamara's first cube has a volume of 64 cubic centimeters, and her second cube has a volume of 343 cubic centimeters

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4 years ago

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3 years ago