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3 years ago

I don't get the problem to 6j-3 for j=4

Mathematics

1 answer:

Anit [1.1K]3 years ago

6 0

Answer:

6×4-3=21

Step-by-step explanation:

you replace the j by 4 so you multiply the 6 by 4 and then proceed to subtract three getting 21

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4 x square - 32 x + 60 is equal to zero

Charra [1.4K]

Answer: x =5 or x = 3

Step-by-step explanation:

4x2−32x+60

=4(x−3)(x−5)

x = 5 or x = 3

3 0

3 years ago

Cassandra used 2.8lb of groun can Sandra news 2.8 lbs of ground beef in a recipe for hamburger me about how many kilograms what

Anna11 [10]

Answer:

$\large \boxed{\text{1.3 kg}}}$

Step-by-step explanation:

1 kg = 2.205 lb

$\text{Mass} = \text{2.8 lb} \times \dfrac{\text{1 kg}}{\text{2.205 lb}} = \text{1.3 kg}\\\\\text{The mass of the ground beef is $\large \boxed{\textbf{1.3 kg}}$}$

6 0

3 years ago

Hey there can you help me out on this question

andre [41]

Discriminant of a quadratic equation can be calculated as:

Discriminant = b² - 4ac

b = coefficient of x term = 2
a = coefficient of squared term = 1
c = constant = 7

So,

Discriminant = 4 - 4(1)(7) = -24

So, the correct answer to this question is option C

6 0

3 years ago

Iiii needdd helppp withhh thisss

Alchen [17]

It's an upside (-) down parabola. The axis of symmetry is the x coordinate of the vertex.

you can easily find this using formula: x= -b/2a
for parabola: ax² + b + c = 0
x = -16 ÷ 2(-4)
x = 2
Answer C

4 0

4 years ago

Select the correct answer. A triangle with vertices at A(0, 0), B(0, 4), and C(6, 0) is dilated to yield a triangle with vertice

erma4kov [3.2K]

Answer:

* The scale factor of the dilation is 2.5

Step-by-step explanation:

* Lets talk about dilation

- A dilation is a transformation that changes the size of a figure.

- It can become larger or smaller, but the shape of the

figure does not change.

- The scale factor, measures how much larger or smaller

the image will be

- If the scale factor greater than 1, then the image will be larger

- If the scale factor between 0 and 1, then the image will be smaller

* In the problem

- The vertices of the triangle is A (0 , 0) , B (0 , 4) , C (6 , 0)

and its image A' is (0 , 0) , (0 , 10) , (15 , 0)

∵ 10 ÷ 4 = 2.5

∵ 15 ÷ 6 = 2.5

∴ The scale factor is 2.5

∵ 2.5 > 1

∴ The image of the triangle will be larger

* The scale factor is 2.5

6 0

3 years ago