Answer:
19 wrong answers.
Step-by-step explanation:
Given:
Sahil got 28 questions right.
Angelina got 7 more wrong answers than Sahil.
There where 40 questions on the test.
Question asked:
How many answers did Angelina get wrong on the math test ?
Solution:
Total questions on the test = 40
Number of right answers, Sahil got = 28
Number of wrong answers, Sahil got = 40 - 28 = 12
As Angelina got 7 more wrong answers than Sahil,
Number of wrong answers, Sahil got = 12
Then, number of wrong answers, Angelina got = 12 + 7 = 19
Therefore, 19 answers did Angelina get wrong on the math test out of 40.
The common difference and the first term of the arithmetic progression are y - 0.5x and 5x - 5y respectively
<h3>Arithmetic progression:</h3>
The nth term of an arithmetic progression is express as follows:
where
n = number of terms
d = common difference
a = first term
The fifth term is represented as t₅ = 3x - y
The 11th term is represented as t₁₁ = 5y
Let's find the first term and the common difference as required.
Therefore,
- a + 4d = 3x - y
- a + 10d = 5y
Take the difference to find d
6d = 5y - 3x + y
6d = 6y - 3x
d = y - 0.5x
Let's find the first term.
a + 4(y - 0.5x) = 3x - y
a + 4y - 2x = 3x - y
a = 3x - y - 4y + 2x
a = 5x - 5y
learn more on arithmetic progression:brainly.com/question/20713325?referrer=searchResul
Answer: " p = 6 " ; or, write as: " 6.125 " .
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{ when "x = 7" }.
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Step-by-step explanation:
p/x ;
when p = 7 ; x = 8 ;
7:8
p:x:: p:7 ;
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7:8::p:7 ; write as a "fraction:
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7/8 = p/7 ;
To find "p" when "x = 7 " ;
Cross-factor multiply:
→ that is:
→ ; ↔ ad = bc ;
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→ ; ↔ (7 * 7) = (8 * p) ;
→ (7 * 7) = (8 * p) ;
→ 49 = 8p ;
Divide each side of the equation by "8" ;
to isolate "p" on one side of the equation;
& to solve for "p" ;
→ 49 / 8 = 8p / 8 ;
to get:
→ 49/8 = p ;
↔ p = 48/9 ;
→ 49/8 = 49 ÷ 8 = ? ;
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6
8 ⟌49
- 48
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1
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6 R 1 ; 6 1/8 ; or; 6.125.
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Answer: " p = 6 " ; or, write as: " 6.125 " .
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{ when "x = 7" }.
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Im not sure but I would say A. DONT TOTALLY TRUST ME!