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3 years ago

This question right up here ☝️☝️

Mathematics

1 answer:

almond37 [142]3 years ago

6 0

Namely, how many times does 3/4 go into 6?

$\bf \cfrac{\quad 6 \quad }{\frac{3}{4}}\implies \cfrac{\quad \frac{6}{1} \quad }{\frac{3}{4}}\implies \cfrac{6}{1}\cdot \cfrac{4}{3}\implies \cfrac{24}{3}\implies 8$

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a sketch of y=x^2+6x+15 has been drawn. Complete the sketch by entering the corresponding values on the axes.

8_murik_8 [283]

Answer:

Vertex=(-3,6) and Y intercept is 15/(0,15)

Step-by-step explanation:

6 0

3 years ago

Help please I need to answer this question

djverab [1.8K]

Answer:

Step-by-step explanation:

first find the perimeter of both triangles

Original perimeter: 72 in

scaled perimeter: 24 in

A is wrong since the scaled perimeter is actually smaller.

B is wrong because its not 6 times smaller

C is wrong since it's not 1/9 of the original

D is correct since the scaled is a 1/3 of the original perimeter (72*1/3 = 24)

6 0

3 years ago

Use the quadratic regression to find the equation for the parabola going through these 3 points (-5, 161) (-2, 29) (6, 205)

Rama09 [41]

Answer:

The equation of the parabola is y = 6 $x^{2}$ -2b+1

Step-by-step explanation:

First we write a quadratic equation of parabola as y = a $x^{2}$ +bx+c

Now it is given in the question that parabola passes through three points (-5,161),(-2,29),(6,205).

To find the equation we have to get the value of a,b & c.

Now we form three equations to find the value of a,b,c.

We put the value (-5,161) in the equation

161 = a×25+b×(-5)+c

161 = 25a-5b+c----------(1)

Now we put (-2,29) in the equation

29 = a×4+b×(-2)+c

29 = 4a-2b+c---------(2)

Again we put (6,205) in the equation

205 = a×36+6b+c------------(3)

Now we subtract equation (1) from (2)

161-29 = 25a-4a-5b-(-2b)+c-c

132 = 21a-5b+2b

132 = 21a-3b

132 = 3(7a-b)

44 = 7a-b---------(4)

Now we subtract equation (2) from (3)

205-29 = 36a-4a+6b-(-2b)+c-c

176 = 32a+6b+2b

176 = 32a+8b

176 = 8(4a+b)

22 = 4a+b------------(5)

Now we add equation (5) and (4)

44+22 = 7a+4a-b+b

66 = 11a

a = 6

Now we put the value a in equation (4)

44 = 7×6-b

44 = 42-b

44-42 = -b

2 = (-b)

b = (-2)

Now we put the value of a and b in equation number (2)

29 = 4×6-2(-2)+c

29 = 24+4+c

29 = 28+c

c = 29-28

c =1

Finally we put the value of a,b,c in the quadratic equation

y = 6 $x^{2}$ +(-2)x+1

y = 6 $x^{2}$ -2+1

This is the final answer.

6 0

3 years ago

Answer please need help with this

allsm [11]

Answer:

n = - $\frac{13}{8}$

Step-by-step explanation:

Given

- 8n = 13 ( divide both sides by - 8 )

n = $\frac{13}{-8}$ = - $\frac{13}{8}$

6 0

3 years ago

Triangles and rectangle

torisob [31]

Step-by-step explanation:

Area of triangle (A1)

= 1/2 * b *h

= 1/2 * 1 * 1

= 1/2 ft

Area of rectangle (A2)

= L * b

= 3 *1

= 3 ft

Total area

= A1 + A2

= 1/2 + 3

= (1 + 6 ) / 2

= 7/2 ft²

= 3.5 ft²

Hope it will help :)

7 0

3 years ago