First you divide everything by 4 which will become b^2+2b-3=0
Then you can factor this which is
(b-1)(b+3)=0
B=1
B=-3 ... I think that's how you do it

4 0

2 years ago

Which statement describes a ratio?

Mnenie [13.5K]

Answer:

C. For every 2 red candies in a bag, there are 3 green candies.

Step-by-step explanation:

A ratio always contains 2 figures.

5 0

2 years ago

Read 2 more answers

The weight Wkg of a metal bar varies jointly

maria [59]

Answer:

d = $\sqrt{\frac{216W}{35L} }$

Step-by-step explanation:

Given that W varies jointly as L and d² then the equation relating them is

W = kLd² ← k is the constant of variation

To find k use the condition W = 140 when d = 4 and L = 54, thus

140 = k × 54 × 4² = 864k ( divide both sides by 864 )

$\frac{140}{864}$ = k , that is

k = $\frac{35}{216}$

W = $\frac{35}{216}$ Ld² ← equation of variation

Multiply both sides by 216

216W = 35Ld² ( divide both sides by 35L )

$\frac{216W}{35L}$ = d² ( take the square root of both sides )

d = $\sqrt{\frac{216W}{35L} }$

6 0

2 years ago

The larger cube measures 20 cm on each edge. What is the surface area?

gavmur [86]

Answer:

2400

Step-by-step explanation:

Give Me brainllest plz T-T

4 0

2 years ago