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KATRIN_1 [288]
3 years ago
14

4} = - 1" alt=" \frac{5 + n}{4} = - 1" align="absmiddle" class="latex-formula">
What is n?
​
Mathematics
2 answers:
Delvig [45]3 years ago
4 0

Answer:

n=   -9

Step-by-step explanation:

Andrews [41]3 years ago
3 0

Answer:

-9

Step-by-step explanation:

5 + n

====   =   -1

4

Multiply both sides by 4

5 + n = - 1 * 4

5 + n = - 4

Subtract 5 from both sides

5-5 + n = - 4 - 5

n = - 9

Congratulations on being able to use latex.

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5. Given that a + b = 8 and ab = 15, find the value of (a+b)² and a² + b²​
Maksim231197 [3]

Answer:

64 and 34

Step-by-step explanation:

Given

a + b = 8 ( square both sides )

(a + b)² = 8² = 64

------------------------------------------------

(a + b)² = 64 ← expand left side

a² + b² + 2ab = 64 ← substitute ab = 15

a² + b² + 2(15) = 64

a² + b² + 30 = 64 ( subtract 30 from both sides )

a² + b² = 34

5 0
3 years ago
Hi please help i’ll give brainliest please
d1i1m1o1n [39]

Answer:

45

Step-by-step explanation:

Substitute 5 for both y values

4 x (5) + (5)^2

6 0
4 years ago
96.3cm measured your the nearest tenth of a cm.
I am Lyosha [343]

Answer:

100cm

Step-by-step explanation:

The tenths of a cm are 10, 20, 30, 40 etc..

7 0
3 years ago
I need help with # 14 and 15 ASAP... It is due tomorrow ..can some one please help me with it
Angelina_Jolie [31]

Answer:

See explanation

Step-by-step explanation:

A. Gasoline fill-up fee = $4.50

Cost per hour = $40

Average cost = C

Number of hours the scootcar is rented = h

Cost per h hours = $40h

Total cost = $40h + $4.50

Hence,

C = 40h+4.5

B. To plot the graph of the function, find h- and C- intercepts.

When h = 0, then C = 4.5, and we have point (0,4.5)

When C = 0, then 0 = 40h + 4.5, h = -45/400 = -0.1125, and we have point (-0.1125,0)

Plot these two points and connect them with a straight line.

Graph is attached, but you should take only that part of the graph that corresponds to points with h > 0, because the number of hours cannot be negative

8 0
4 years ago
To be able to do the problem 5(10+4) mentally, zach does 50+20 instead of 5(14). Zach is using which of the following properties
liberstina [14]

Answer:

Zach is using the distributive property.

Step-by-step explanation:

He distributes the 5 to the numbers inside the ().

6 0
3 years ago
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