3 years ago

How do you solve this ?

Mathematics

1 answer:

quester [9]3 years ago

8 0

3x + 7 > 4x + 3

subtract 3x from both sides

7 > x + 3

7 - 3 > x

x < 4

You might be interested in

How many solutions are in 6-2(3-2x)=-4(3-x) ?

Daniel [21]

Answer:

Step-by-step explanation:

there is no solution:

6-2(3-2x) = -4(3-x)

6-6+4x= -12+4x

4x= -12+4x

0=-12

4 0

3 years ago

Read 2 more answers

Find the radius of a circle with an area of 16x^2+24x+9

Diano4ka-milaya [45]

Area of circle =π *r^2
so π*r^2 = π(16x^2 + 24x + 9)
r^2 = 16x^2 + 24x + 9
= (4x +3)(4x+3)
= (4x +3)^2
Take square roots of both sides
r = 4x +3

8 0

3 years ago

Can somebody help me with the Math's questions on Pythagoras Theorem? Thanks

olga2289 [7]

Answer:

2.4 cans cost 47.4

If you cannot buy 2.4 cans, you must buy 3 cans, then you'll pay 59.25

Step-by-step explanation:

The lawn has trapezoidal shape, so find the area of the trapezoid using formula

$A=\text{Midline}\times \text{Height}$

In the diagram, ABED is rectangle, so BE = 12 m, thus ED = 20 m - 12 m = 8 m.

Consider right triangle EDC. By the Pythagorean theorem,

$ED^2+EC^2=CD^2\\ \\ED^2+8^2=17^2\\ \\ED^2=289-64\\ \\ED^2=225\\ \\ED=15\ m$

Thue,

Height = 15 m

Find the midline:

$\text{Midline}=\dfrac{AD+BC}{2}=\dfrac{12+20}{2}=16\ m$

Hence,

$A=16\cdot 15=240\ m^2$

One can cover $100\ m^2,$ to cover $240\ m^2$ is needed

$240:100=2.4$ cans

One can costs 19.75, so 2.4 cans cost

$19.75\cdot 2.4=47.4$

If you cannot buy 2.4 cans, you must buy 3 cans, then you'll pay

$19.75\cdot 3=59.25$

4 0

4 years ago

ASAP PLEASE!!!!<br><br> What is an equation for the line with slope<br> 2/3 and y-intercept 9?

Ainat [17]

Y=2/3x+9 the answer is C

7 0

3 years ago

Read 2 more answers

Carey is trying to decide between two guitars. The first had an original price of $160, but is on sale for $100. The second had

sasho [114]

the one on sale for $100 would be the better buy for the guitar

6 0

3 years ago

Read 2 more answers