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Anton [14]
2 years ago
5

Hello! Could anyone help me with this as I really don’t have a clue on what to do

Mathematics
1 answer:
lakkis [162]2 years ago
7 0

Answer:

1. 1.4

2. -0.3

3. 0.4

4. -3.2

Step-by-step explanation:

use the quadratic formula to find x intercepts

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What is the value of a in the equation 5a – 10b = 45, when b = 3?
grigory [225]

5a-10(3)=45

5a-30=45

5a=75

a=15

3 0
3 years ago
Read 2 more answers
Wha rid the value of n very confused and need help
Slav-nsk [51]

Answer:

n = 6

Step-by-step explanation:

Two intersecting chords. The product of the parts of one chord is equal to the product of the parts of the other chord, that is

7(n + 4) = 5(n + 8) ← distribute parenthesis on both sides

7n + 28 = 5n + 40 ( subtract 5n from both sides )

2n + 28 = 40 ( subtract 28 from both sides )

2n = 12 ( divide both sides by 2 )

n = 6

7 0
3 years ago
Nathan had an infection, and his doctor wanted him to take penicillin. Because Nathan’s father and paternal grandfather were all
Sergio039 [100]
Let events
A=Nathan has allergy
~A=Nathan does not have allergy
T=Nathan tests positive
~T=Nathan does not test positive

We are given
P(A)=0.75  [ probability that Nathan is allergic ]
P(T|A)=0.98  [probability of testing positive given Nathan is allergic to Penicillin]

We want to calculate probability that Nathan is allergic AND tests positive
P(T n A)

From definition of conditional probability,
P(T|A)=P(T n A)/P(A)
substitute known values,
0.98 = P(T n A) / 0.75
solving for P(T n A)
P(T n A) = 0.75*0.98 = 0.735

Hope this helps!!
3 0
4 years ago
Which expression is equivalent to v2/3v2? 1/4 6v2 v2 v2/2
patriot [66]

Answer:

Step-by-step explanation:

2^{1/2}  - 2^{-1/3}  = 2^{1/2 + 1/3}  = 2^{3/6}  = 2^{1/2} = \sqrt{2}

6 0
3 years ago
Read 2 more answers
What does 5 1/2 + 3 1/4 + 3 + 4 1/2 + 3 +3 2/5 equal also this is for Middle School not high school
nekit [7.7K]

Answer:

I think it's 22.65 but I'm not for sure

4 0
3 years ago
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