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uysha [10]
3 years ago
13

Twice the difference of a number and 5 is 7​

Mathematics
2 answers:
yuradex [85]3 years ago
7 0

Answer:

8.5

Step-by-step explanation:

zysi [14]3 years ago
3 0
The difference of a number and 5 = n - 5

Twice that = 2(n - 5)


‘is’ is the equal sign, so the expression before is equal to 7.


Equation: 2(n - 5) = 7
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Helpppppppppppppppppp What does the statement ∣
Xelga [282]

Answer:

b is 7 units from 0.

Step-by-step explanation:

|b| = 7 means that the absolute value of b is 7. This means that b can be -7 or 7, so it will always be 7 units from 0.

Hope this helps!

7 0
3 years ago
If PQR ≈ STU complete each part
lorasvet [3.4K]

*see attachment for the complete diagram and what is required.

Answer:

✅ST = 7 m

✅SU = 8 m

✅m<R = 46°

✅m<Q = 75°

✅m<S = 59°

Step-by-step explanation:

Given that ∆PQR ≅ ∆STU, therefore, their corresponding sides and angles would be congruent to each other.

Thus:

<P ≅ <S, therefore, m<P = m<S = 59°

<Q ≅ <T, therefore, m<Q = m<T = 75°

<R ≅ <U, therefore, m<R = m<U.

PQ ≅ ST, therefore, PQ = ST

QR ≅ TU, therefore, QR = TU

PR ≅ SU, therefore, PR = SU

Let's find the measure of the following with the information we already know:

✅ST = PQ = 7 m

✅SU = PR = 8 m

✅m<R = 180 - (m<P + m<Q) (sum of ∆)

m<R = 180 - (59°+ 75°) (substitution)

m<R = 180 - 134

m<R = 46°

✅m<Q = m<T = 75°

✅m<S = m<P = 59°

5 0
3 years ago
the national flag of scotland has a white diagonal on a blue backround Tracy is sewing a scottish flag she knows that the length
dybincka [34]

Answer:

12 feet

Step-by-step explanation:

By Pythagoras theorem, a²+b²=c², where c represents the diagonal and a and b represents the other sides of a right angled triangle

As a flag is a rectangle, the two triangles cut would be  right angled triangles

Therefore, a²+9²=15²

a²+81=225

a²=144

a=√144

a=12 feet

7 0
3 years ago
A 90% confidence interval is (35 45). What is the margin of error?
MA_775_DIABLO [31]

Answer:

option A 5

I hope it's correct

.....

7 0
3 years ago
154.1 ÷ 0.5 as a mixed number
Minchanka [31]
154/5 hope this help

7 0
3 years ago
Read 2 more answers
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