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trapecia [35]
3 years ago
8

4. (i) Solve the equation 2x2 – 7x + 4 = 0, giving

Mathematics
1 answer:
Colt1911 [192]3 years ago
6 0

????????????????????????????Step-by-step explanation:

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Find the value of this pronumeral
Rina8888 [55]
<u>Answer</u>:

x = 70 ; 

y = 50  .
_____________________________________________________
Explanation:
_____________________________________________________
y = 50 ; since vertical angles are congruent.


180 – (50 + 60) = x ;  since all angles in any triangle add up to 180 degrees. 

↔  x = 180 – (50 + 60) = 180 – (110) = 70.
_____________________________________________________
3 0
3 years ago
F(x) = x^2 + 2x – 4<br> f(3) = ?
Ostrovityanka [42]

Answer:

11

Step-by-step explanation:

f(3)=(3)^2+2(3)-4

f(3)=9+2(3)-4

f(3)=9+6-4

f(3)=15-4

f(3)=11

8 0
3 years ago
A recipe states that 5 servings of peanuts have 1,250 calories. How many servings is 375 calories of peanuts? *
inysia [295]
1,250/5 = 250 calories per serving
375/250 = 1.5 servings
6 0
2 years ago
Read 2 more answers
As a real estate agent kensho earns 4.5% commission on the houses he sells in the first quarter of the year he sold two houses o
Natalka [10]
175000 / 100 = 1750  this step finds 1% of 175000
1750 x 4.5 = 7875  this step finds 4.5% of 175000
Commission for first house $7875
199000 / 100 = 1990  this step finds 1% of 199000
1990 x 4.5 = 8955  this step finds 4.5% of 199000
Commission for second house $8955
$7875 + $8955 = $16,830

Kensho's commission for this quarter is $16,830
4 0
3 years ago
Find the sum of the first 12 terms of the sequence. Show all work for full credit. 1, -4, -9, -14, . . . (2 points)
My name is Ann [436]

<u>Answer:</u>

S_n= -348

<u>Step-by-step explanation:</u>

We are given the following arithmetic sequence and we are to find the sum of its first 12 terms:

1, -4, -9, -14, . . .

For that, we will use the formula for the sum of the arithmetic mean:

S_n=\frac{n}{2} (a_1+a_n)

We know the value of the first term (a_n) but we need to find the value of a_{12}. So we will use the following formula:

a_{12}=a_1+(n-1)d

a_{12}=(-4)+(12-1)(5)

a_{12}=-59

Substituting these values in the sum formula to get:

S_n=\frac{12}{2} (1+(-59))

S_n= -348

4 0
3 years ago
Read 2 more answers
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