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never [62]
3 years ago
7

I don’t now how to do it please help

Mathematics
1 answer:
Mariana [72]3 years ago
7 0
(20 x 20) + (1/2 x16 x 12) i think
You might be interested in
20 points
Lubov Fominskaja [6]

Answer:

1/3

Step-by-step explanation:

Slope = ( y₂ - y₁ ) ÷ ( x₂ - x₁ )

y₂ = 9

y₁ = 7

x₂ = 4

x₁ = -2

y₂ - y₁ = 9 - 7 = 2

x₂ - x₁ = 4 - -2 = 6

2 ÷ 6 = 1/3

3 0
3 years ago
mn(s) 2h (aq)→mn2 (aq) h2(g)mn(s) 2h (aq)→mn2 (aq) h2(g) express your answer in bolts using two decimal places.
Zielflug [23.3K]

The required Standard electrode potential is +1.18V.

What is Standard electrode potential?

  • The difference in voltage between the cathode and anode is known as the standard cell potential. View Cell Potentials for more details. All of the standard potentials are determined using 1 M solutions, 1 atm, and 298 K.
  • The difference between the two electrodes, known as the standard cell potential (Eocell), creates the cell's voltage.
  • The equilibrium potential can be measured using the standard electrode potential.
  • The potential of a cell under normal state circumstances, which are roughly represented by concentrations of 1 mole per litre, is known as the cell's standard state potential.

Given that,

Mn+2H^+-- > Mn^{+2}+ H_2

E°cell , E\°_{2H^+/H_2}-E\°_{Mn^+2/Mn}

0.0-(-1.18)=+1.18V

=+1.18V

The required Standard electrode potential is +1.18V.

Learn more about Standard electrode potential here:

brainly.com/question/14240930

#SPJ4

4 0
2 years ago
Help me with thiqs one please
Vedmedyk [2.9K]

Answer:

Step-by-step explanation:

for x= -4

h(x)= 4(-4) + 4

= -12+4

= -8

for x= -2

h(x)= 4(-2) + 4

= -8+4

= -4

for x=1

h(x)= 4(1) + 4

=8

for x=3

h(x)= 4(3) + 4

=12+4

=16

for x=5

h(x)= 4(5) + 4

=24

5 0
3 years ago
algerbra. com The ninth graders at a high school are raising money by selling T-shirts and baseball caps. The number of T-shirts
My name is Ann [436]

Answer:

36 T-shirts and 12 Baseball Caps

Step-by-step explanation:

GIVEN: The ninth graders at a high school are raising money by selling T-shirts and baseball caps. The number of T-shirts sold was three times the number of caps. The profit they received for each T-shirt sold was \$5.00, and the profit on each cap was \$2.50.

TO FIND: If the students made a total profit of \$210, how many T-shirts and how many caps were sold.

SOLUTION:

Let the total number of T-shirts sold are =\text{t}

Let the total number of Baseball Caps sold are =\text{b}

Profit received on each T-shirt =\$5.00

Profit received on each Baseball Caps =\$2.50

Total profit received on T-shirts =\$5.00\text{t}

Total profit received on Baseball Caps =\$2.50\text{b}

5\text{t}+2.5\text{b}=210

Also,

The number of T-shirts sold was three times the number of caps.

        \text{t}=3\text{b}

putting in equation,

       5\times\text{3b}+2.5\text{b}=210

       17.5\text{b}=210

       \text{b}=12

       \text{t}=3\times12

       \text{t}=36

Hence total 36 t-shirts and 12 baseball Caps were sold.

     

6 0
3 years ago
−p^3 −5p−9<br> Select all coefficients.
levacccp [35]

Answer:

k

Step-by-step explanation:

k

5 0
3 years ago
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