All categories

2 years ago

Girardo is using the model below to solve the equation 3x+1=4x+(-4)

Mathematics

1 answer:

V125BC [204]2 years ago

5 0

Answer:

x=5

Step-by-step explanation:

3x+1= 4x+(-4)

-4×+1= -4x-1 combine like terms

-1x= -5 divided by -1

x= 5

You might be interested in

Write the expression in terms of cosine.please help.

Aleks04 [339]

Answer:

cos13°

Step-by-step explanation:

Using the cofunction identity

sinx° = cos(90 - x)°

sin77° = cos(90 - 77)° = cos13°

4 0

3 years ago

In triangle ABC , M and N are midpoints of sides. If MN = 2x + 5 and BC = x2 − 2, find the possible lengths for MN.

Karo-lina-s [1.5K]

Answer:

A.17

Step-by-step explanation:

3 0

3 years ago

Gravel is being dumped from a conveyor belt at a rate of 15 ft3/min, and its coarseness is such that it forms a pile in the shap

gayaneshka [121]

Answer:

0.13 ft/min

Step-by-step explanation:

We are given that

$\frac{dV}{dt}=15ft^3/min$

We have to find the increasing rate of change of height of pile when the pile is 12 ft high.

Let d be the diameter of pile

Height of pile=h

d=h

Radius of pile,r= $\frac{d}{2}=\frac{h}{2}$

Volume of pile= $\frac{1}{3}\pi r^2 h=\frac{1}{12}\pi h^3$

$\frac{dV}{dt}=\frac{1}{4}\pi h^2\frac{dh}{dt}$

h=12 ft

Substitute the values

$15=\frac{1}{4}\pi(12)^2\frac{dh}{dt}$

$\frac{dh}{dt}=\frac{15\times 4}{\pi(12)^2}$

$\frac{dh}{dt}=0.13ft/min$

7 0

3 years ago

K is an example of.<br> O an equation<br> O a formula<br> O a constant<br> O a variable

Diano4ka-milaya [45]

The answer is (a variable)

8 0

2 years ago

Read 2 more answers

PLEASE ANSWER QUICKLY

Rudiy27

Answer:

Step-by-step explanation:

f(x) = 3x² - 2x + 1

f(x) = ax² + bx + c

a = 3

7 0

2 years ago