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goldenfox [79]
2 years ago
10

Simplify this algebraic expression. z- 4/4+8 A. Z-7 B. Z+9 C. 2-3 D. Z+7

Mathematics
2 answers:
Katarina [22]2 years ago
5 0

Answer:

Z-4/4+8

Z - 1 + 8

Z + (-1 + 8)

Z + 7

Oduvanchick [21]2 years ago
3 0

Answer:

(D) : Z+7

Step-by-step explanation:

−

1

+

8

}}

z−1+8

+

7

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Write a system of equations to describe the situation below, solve using any method, and fill in the blanks. A caterer is making
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3 years ago
Jane uses 8.4 pints of blue paint and white paint to paint her bedroom walls. 4/5 of the amount is blue paint, and the rest is w
Yuki888 [10]

Answer:

1.68 pints

Step-by-step explanation:

First you need to determine how much blue paint she used, then you can determine how much white paint she used. :)

4/5 of 8.4:

4/5 * 8.4 = 6.72 pints

Now we can determine how many pints of white paint she used by subtracting 6.72 from 8.4:

8.4 - 6.72 = 1.68

So she used 1.68 pints of white paint. :) Hope this helped!

4 0
3 years ago
After five games a football team's goal average is 2.8. After one more game the goal average is 3. The number of goals scored in
Svetlanka [38]

Answer:

4 goals

Step-by-step explanation:

Let:

x = number of total goals scored in first 5 games

y = answer = number of goals in 6th game

formula:

average = sum of individual parts / total number of parts

average_5_games = x / 5 = 2.8

solve for x:

x = 2.8 × 5 = 14

average_6_games = (x + y) / 6 = 3

solve for y:

x + y = 6 × 3 = 18

y = 18 - x = 18 - 14 = 4

4 0
3 years ago
Read 2 more answers
If the measure of angle KNL = 6x - 2 and angle LMN = 4x + 24 find the value of x so that angle KNM is a right angle.
Mnenie [13.5K]
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3 0
3 years ago
Bonjour je suis en 3 ème pouvez vous m'aider s'il vous plaît une voiture met 2 h 30 pour faire 200 km 1. Calculer sa vitesse moy
Lemur [1.5K]

Répondre:

Explication étape par étape:

Vitesse = Distance / Temps

Distance donnée = 200 km

Durée = 2 h 30

Convertir le temps en heures

Depuis 60 minutes = 1h

2 heures 30 minutes = 2+ (30/60)

2h30 = 2 + 1/2 hors

2 heures 30 minutes = 2,5 heures

Vitesse en km / h = 200 km / 2,5 h

Vitesse en km / h = 80 km / h

D'où sa vitesse moyenne en km / h est de 80 km / h

a) Distance = Vitesse * Temps

Vitesse donnée = 80 km / h

Durée = 3h15

Temps = 3 15/60 h

Durée = 3,25 h

Distance = 80 * 3,25

Distance parcourue en 3h15 = 260 km

b) Distance = Vitesse * Temps

Vitesse donnée = 80 km / h

Durée = 42 minutes

Durée = 42/60 h

Distance = 80 * 42/60

Distance = 3360/60

Distance = 56 km

Distance parcourue en 42 minutes = 56 km

c) Distance = Vitesse * Temps

Vitesse donnée = 80 km / h

Durée = 3 h 36 minutes

Temps = 3 36/60 h

Durée = 3,6 h

Distance = 80 * 3,6

Distance = 288 km

Distance parcourue en 3 h 36 min = 288 km

d) Distance donnée = 540 km

Vitesse = 80 km / h

Temps = Distance / Vitesse

Heure = 540/80

Temps = 6,75 heures

Par conséquent, le temps nécessaire pour parcourir 540 km est de 6,75 heures

7 0
3 years ago
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